JNL SERIES TRUST
497, 1997-02-18
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<PAGE>   1
 
                              JNL(R) SERIES TRUST
                               SEPTEMBER 16, 1996
<PAGE>   2
 
PROSPECTUS
September 16, 1996
 
JNL(R) SERIES TRUST
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5901 Executive Drive - Lansing, Michigan 48911
 
     JNL Series Trust ("Trust") is an open-end management investment company
organized under the laws of Massachusetts, by a Declaration of Trust, dated June
1, 1994. The Trust currently offers shares in separate Series, each with its own
investment objective. The shares of the Trust are sold to life insurance company
separate accounts to fund the benefits of variable insurance and annuity
policies.
 
     JNL AGGRESSIVE GROWTH SERIES is a non-diversified Series that seeks as its
investment objective long-term growth of capital by investing primarily in
common stocks of issuers of any size, including larger, well-established
companies and smaller, emerging growth companies.
 
     JNL CAPITAL GROWTH SERIES is a non-diversified Series that seeks as its
investment objective long-term growth of capital by emphasizing investments in
common stocks of medium-sized companies. Although the Series expects to
emphasize such securities, it may also invest in smaller or larger companies.
 
     JNL GLOBAL EQUITIES SERIES seeks as its investment objective long-term
growth of capital by investing primarily in common stocks of foreign and
domestic issuers of any size. This Series normally invests in issuers from at
least five different countries including the United States.
 
     JNL/ALGER GROWTH SERIES seeks as its investment objective long-term capital
appreciation by investing in a diversified, actively managed portfolio of equity
securities, primarily of companies with total market capitalization of $1
billion or greater.
 
     PPM AMERICA/JNL HIGH YIELD BOND SERIES seeks as its investment objective a
high level of current income; its secondary investment objective is capital
appreciation by investing in fixed income securities, with emphasis on higher-
yielding, higher-risk, lower-rated or unrated corporate bonds.
 
     PPM AMERICA/JNL MONEY MARKET SERIES seeks as its investment objective as
high a level of current income as is consistent with the preservation of capital
and maintenance of liquidity by investing in high-quality, short-term money
market instruments.
 
     SALOMON BROTHERS/JNL GLOBAL BOND SERIES seeks as its investment objective a
high level of current income. As a secondary objective, the Series will seek
capital appreciation. The Series seeks to achieve its objectives by investing in
a globally diverse portfolio of fixed income investments and by giving the
sub-adviser broad discretion to deploy the Series' assets among certain segments
of the fixed income market that the sub-adviser believes will best contribute to
achievement of the Series' investment objectives. In pursuing its investment
objectives, the Series reserves the right to invest predominantly in securities
rated in medium or lower rating categories or as determined by the sub-adviser
to be of comparable quality. Although the Series has the ability to invest up to
100% of the Series' assets in lower-rated securities, the Series' sub-adviser
does not anticipate investing in excess of 75% of the Series' assets in such
securities.
 
     SALOMON BROTHERS/JNL U.S. GOVERNMENT & QUALITY BOND SERIES seeks as its
investment objective a high level of current income, by investing primarily in
debt obligations and mortgage-backed securities issued or guaranteed by the U.S.
Government, its agencies or instrumentalities including collateralized mortgage
obligations backed by such securities. The Series may also invest a portion of
its assets in investment-grade bonds.
 
     T. ROWE PRICE/JNL ESTABLISHED GROWTH SERIES seeks as its investment
objective long-term growth of capital and increasing dividend income through
investment primarily in common stocks of well-established growth companies.
 
                                        1
<PAGE>   3
 
     T. ROWE PRICE/JNL INTERNATIONAL EQUITY INVESTMENT SERIES seeks as its
investment objective long-term growth of capital through investments primarily
in common stocks of established, non-U.S. companies.
 
     T. ROWE PRICE/JNL MID-CAP GROWTH SERIES seeks as its investment objective
long-term growth of capital by investing primarily in the common stock of
companies with medium-sized market capitalizations ("mid-cap") and the potential
for above average growth.
 
     As a result of the market risk inherent in any investment, there is no
assurance that the investment objective of any of the Series will be realized.
Investments in a Series are neither insured nor guaranteed by the U.S.
Government or any other entity or person, and there can be no assurance that the
PPM America/JNL Money Market Series will be able to maintain a stable net asset
value of $1.00 per share.
 
     THE PPM AMERICA/JNL HIGH YIELD BOND SERIES INVESTS PREDOMINANTLY IN, AND
THE JNL AGGRESSIVE GROWTH SERIES, JNL CAPITAL GROWTH SERIES, JNL GLOBAL EQUITIES
SERIES, AND SALOMON BROTHERS/JNL GLOBAL BOND SERIES MAY INVEST IN, HIGH YIELD,
HIGH RISK BONDS. BONDS OF THIS TYPE ARE TYPICALLY SUBJECT TO GREATER MARKET
FLUCTUATIONS AND RISK OF LOSS OF INCOME AND PRINCIPAL DUE TO DEFAULT BY THE
ISSUER THAN ARE INVESTMENTS IN LOWER YIELDING, HIGHER RATED BONDS. (SEE
INVESTMENT RISKS SECTION OF PROSPECTUS.)
 
     This Prospectus provides you with the basic information you should know
before investing in the Series. You should read it and keep it for future
reference. A Statement of Additional Information, dated September 16, 1996, has
been filed with the Securities and Exchange Commission. You can obtain a copy
without charge by calling (800) 322-8257, or writing the JNL Series Trust
Service Center, P.O. Box 25127, Lansing, MI 48909.
                            ------------------------
 
     THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES
AND EXCHANGE COMMISSION NOR HAS THE COMMISSION PASSED UPON THE ACCURACY OR
ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL
OFFENSE.
                            ------------------------
 
     THE STATEMENT OF ADDITIONAL INFORMATION, DATED SEPTEMBER 16, 1996, IS
                       INCORPORATED HEREIN BY REFERENCE.
 
                                        2
<PAGE>   4
 
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                               TABLE OF CONTENTS
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<TABLE>
<CAPTION>
                           TOPIC                                PAGE
                           -----                                ----
<S>                                                             <C>
TRUST EXPENSES..............................................       4
 
FINANCIAL HIGHLIGHTS........................................       6
 
INVESTMENT OBJECTIVES AND POLICIES..........................       8
 
MANAGEMENT OF THE TRUST.....................................      26
 
INVESTMENT IN TRUST SHARES..................................      31
 
ADDITIONAL INFORMATION......................................      31
 
TAX STATUS..................................................      33
</TABLE>
 
                                        3
<PAGE>   5
 
- --------------------------------------------------------------------------------
 
                                 TRUST EXPENSES
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SHAREHOLDER TRANSACTION EXPENSES
 
<TABLE>
<S>                                                             <C>
MAXIMUM SALES LOAD IMPOSED ON PURCHASES                         NONE
MAXIMUM SALES LOAD IMPOSED ON REINVESTED DIVIDENDS              NONE
DEFERRED SALES LOAD                                             NONE
REDEMPTION FEES                                                 NONE
EXCHANGE FEE                                                    NONE
</TABLE>
 
ANNUAL SERIES OPERATING EXPENSES
(As a percentage of average net assets.)
 
<TABLE>
<CAPTION>
                                                                               OTHER
                                                              MANAGEMENT   EXPENSES(AFTER      TOTAL SERIES
                                                                 FEE       REIMBURSEMENT)   OPERATING EXPENSES
                                                              ----------   --------------   ------------------
<S>                                                           <C>          <C>              <C>
JNL Aggressive Growth Series................................     .95%           .15%               1.10%
JNL Capital Growth Series...................................     .95%           .15%               1.10%
JNL Global Equities Series..................................    1.00%           .15%               1.15%
JNL/Alger Growth Series.....................................    .975%           .15%*             1.125%
PPM America/JNL High Yield Bond Series......................     .75%           .15%                .90%
PPM America/JNL Money Market Series.........................     .60%           .15%                .75%
Salomon Brothers/JNL Global Bond Series.....................     .85%           .15%               1.00%
Salomon Brothers/JNL U.S. Government & Quality Bond
  Series....................................................     .70%           .15%                .85%
T. Rowe Price/JNL Established Growth Series.................     .85%           .15%               1.00%
T. Rowe Price/JNL International Equity Investment Series....    1.10%           .15%               1.25%
T. Rowe Price/JNL Mid-Cap Growth Series.....................     .95%           .15%               1.10%
</TABLE>
 
     *Estimated expenses for the first fiscal year of operation. Actual expenses
may be greater or lesser than those shown.
 
     Currently, Jackson National Financial Services, Inc. will reimburse each of
the Series for annual expenses (excluding Management Fees) in excess of .15% of
average daily net assets. Voluntary reimbursements to these Series may be
modified or discontinued at any time. Prior to reimbursement, Total Series
Operating Expenses as a percentage of net assets for the period ended March 31,
1996, were: JNL Aggressive Growth Series -- 2.77%; JNL Capital Growth Series --
2.08%; JNL Global Equities Series -- 2.25%; JNL/Alger Growth Series -- 1.89%;
PPM America/JNL High Yield Bond Series -- 1.50%; PPM America/JNL Money Market
Series -- 1.30%; Salomon Brothers/JNL Global Bond Series -- 2.14%; Salomon
Brothers/JNL U.S. Government & Quality Bond Series -- 2.53%; T. Rowe Price/JNL
Established Growth Series -- 2.09%; T. Rowe Price/JNL International Equity
Investment Series -- 2.14%; and T. Rowe Price/JNL Mid-Cap Growth Series --
2.10%.
 
                                        4
<PAGE>   6
 
EXAMPLE -
 
     The following example illustrates the expenses you would incur on a $1,000
investment, assuming (1) 5% annual return and (2) redemption at the end of each
time period:
 
<TABLE>
<CAPTION>
                                                                1 YEAR    3 YEARS    5 YEARS    10 YEARS
                                                                ------    -------    -------    --------
<S>                                                             <C>       <C>        <C>        <C>
JNL Aggressive Growth Series................................     $11        $35        $61        $135
JNL Capital Growth Series...................................     $11        $35        $61        $135
JNL Global Equities Series..................................     $12        $37        $64        $140
JNL/Alger Growth Series.....................................     $12        $36        N/A        N/A
PPM America/JNL High Yield Bond Series......................     $ 9        $29        $50        $111
PPM America/JNL Money Market Series.........................     $ 8        $24        $42        $93
Salomon Brothers/JNL Global Bond Series.....................     $10        $32        $55        $123
Salomon Brothers/JNL U.S. Government & Quality Bond
  Series....................................................     $ 9        $27        $47        $105
T. Rowe Price/JNL Established Growth Series.................     $10        $32        $55        $123
T. Rowe Price/JNL International Equity Investment Series....     $13        $40        $69        $152
T. Rowe Price/JNL Mid-Cap Growth Series.....................     $11        $35        $61        $135
</TABLE>
 
     The purpose of this table is to assist you in understanding the various
costs and expenses that you will bear directly or indirectly. The example
assumes a 5% annual rate of return pursuant to the requirements of the
Securities and Exchange Commission. This hypothetical rate of return is not
intended to be representative of past or future performance of the Series.
 
                                        5
<PAGE>   7
 
- --------------------------------------------------------------------------------
 
                              FINANCIAL HIGHLIGHTS
- --------------------------------------------------------------------------------
     The following table provides selected per share data for one share of each
Series for the period from commencement of operations of the Series through
March 31, 1996. The information does not reflect any charges imposed by a
separate account investing in shares of the Series. You should refer to the
appropriate separate account prospectus for additional information regarding
such charges.
 
     The information has been audited by Price Waterhouse LLP, independent
accountants, and should be read in conjunction with the financial statements and
notes thereto, together with the report of Price Waterhouse LLP included in the
Statement of Additional Information.
 
                                JNL SERIES TRUST
 
                              FINANCIAL HIGHLIGHTS
              FOR THE PERIOD MAY 15, 1995* THROUGH MARCH 31, 1996
 
<TABLE>
<CAPTION>
                                                                 JNL
                                                              AGGRESSIVE    JNL CAPITAL    JNL GLOBAL    JNL/ALGER
                                                                GROWTH        GROWTH        EQUITIES      GROWTH
                                                                SERIES        SERIES         SERIES       SERIES*
                                                              ----------    -----------    ----------    ---------
<S>                                                           <C>           <C>            <C>           <C>
SELECTED PER SHARE DATA
NET ASSET VALUE, BEGINNING OF PERIOD........................    $10.00        $10.00         $10.00       $10.00
INCOME FROM INVESTMENT OPERATIONS:
Net investment income.......................................      0.01         --              0.10        --
Net realized and unrealized gains on investments and foreign
  currency related items....................................      3.53          4.70           4.02         0.38
                                                                ------        ------        -------       ------
Total income from investment operations.....................      3.54          4.70           4.12         0.38
                                                                ------        ------        -------       ------
LESS DISTRIBUTIONS:
From net investment income..................................     --            --             --           --
From net realized gains on investment transactions..........     (0.41)        (0.84)         (0.37)       --
                                                                ------        ------        -------       ------
Total distributions.........................................     (0.41)        (0.84)         (0.37)       --
                                                                ------        ------        -------       ------
Net increase................................................      3.13          3.86           3.75         0.38
                                                                ------        ------        -------       ------
NET ASSET VALUE, END OF PERIOD..............................    $13.13        $13.86         $13.75       $10.38
                                                                ======        ======        =======       ======
TOTAL RETURN(a).............................................     35.78%        47.94%         41.51%        3.80%
RATIOS AND SUPPLEMENTAL DATA
Net assets, end of period (in thousands)....................    $8,527        $9,578        $16,141       $8,649
Ratio of net expenses to average net assets(b)(c)...........      1.09%         1.09%          1.15%        1.03%
Ratio of net investment income (loss) to average net
  assets(b)(c)..............................................      0.27%        (0.49)%         0.39%       (0.17)%
Portfolio turnover rate.....................................    163.84%       128.56%        142.36%       50.85%
RATIO INFORMATION ASSUMING NO EXPENSE REIMBURSEMENT OR FEES
  PAID INDIRECTLY
Ratio of expenses to average net assets(b)..................      2.77%         2.08%          2.25%        1.89%
Ratio of net investment income to average net assets(b).....     (1.41)%       (1.48)%        (0.71)%      (1.03)%
</TABLE>
 
- -------------------------
 *  Commencement of operations (October 16, 1995 commencement of operations for
    JNL/Alger Growth Series).
 
(a) Assumes investment at net asset value at the beginning of the period,
    reinvestment of all dividends and distributions, and a complete redemption
    of the investment at the net asset value at the end of the period. Total
    return is not annualized.
 
(b) Annualized.
 
(c) Computed after giving effect to the Adviser's expense reimbursement and fees
    paid indirectly.
 
                                        6
<PAGE>   8
 
<TABLE>
<CAPTION>
                                                                                    T. ROWE
                        PPM                          SALOMON         T. ROWE       PRICE/JNL      T. ROWE
         PPM        AMERICA/JNL     SALOMON       BROTHERS/JNL      PRICE/JNL    INTERNATIONAL   PRICE/JNL
     AMERICA/JNL       MONEY      BROTHERS/JNL   U.S. GOVERNMENT   ESTABLISHED      EQUITY        MID-CAP
      HIGH YIELD      MARKET      GLOBAL BOND    & QUALITY BOND      GROWTH       INVESTMENT      GROWTH
     BOND SERIES      SERIES         SERIES          SERIES          SERIES         SERIES        SERIES
     -----------    -----------   ------------   ---------------   -----------   -------------   ---------
<S>                 <C>           <C>            <C>               <C>           <C>             <C>
        $10.00        $ 1.00         $10.00          $10.00          $10.00          $10.00        $10.00
          0.73          0.04           0.81            0.45            0.07            0.04          0.06
          0.04         --              0.24            0.02            2.68            1.21          3.90
        ------        ------         ------          ------          ------         -------       -------
          0.77          0.04           1.05            0.47            2.75            1.25          3.96
        ------        ------         ------          ------          ------         -------       -------
         (0.54)        (0.04)         (0.56)          (0.34)          (0.06)         --             --
        --             --             (0.03)          (0.04)          (1.33)         --             (0.53)
        ------        ------         ------          ------          ------         -------       -------
         (0.54)        (0.04)         (0.59)          (0.38)          (1.39)         --             (0.53)
        ------        ------         ------          ------          ------         -------       -------
          0.23         --              0.46            0.09            1.36            1.25          3.43
        ------        ------         ------          ------          ------         -------       -------
        $10.23        $ 1.00         $10.46          $10.09          $11.36          $11.25        $13.43
        ======        ======         ======          ======          ======         =======       =======
          7.82%         4.59%         10.74%           4.65%          28.23%          12.50%        40.06%
        $6,156        $6,816         $6,380          $3,007          $8,772         $24,211       $10,545
          0.88%         0.75%          1.00%           0.84%           1.00%           1.25%         1.10%
          8.34%         5.06%          9.01%           5.41%           0.75%           0.78%         0.82%
        186.21%        --            152.89%         253.37%         101.13%          16.45%        66.04%
          1.50%         1.30%          2.14%           2.53%           2.09%           2.14%         2.10%
          7.72%         4.51%          7.87%           3.72%          (0.34)%         (0.11)%       (0.18)%
</TABLE>
 
     Each Series' recent performance and holdings will be detailed twice a year
in the Trust's annual and semi-annual reports, which are sent to all
shareholders.
 
                                        7
<PAGE>   9
 
- --------------------------------------------------------------------------------
                       INVESTMENT OBJECTIVES AND POLICIES
- --------------------------------------------------------------------------------
 
     Investments in each Series are made in many different securities which
provide diversification to minimize risk. While there is careful selection of
portfolio securities and constant supervision by a team of professional
investment managers, there can be no guarantee that the Series' objectives will
be achieved. Because of differences in investment objectives and policies, as
well as acceptable degrees of risk, the performance of a Series may differ even
though more than one Series may utilize the same securities selection.
 
     Unless otherwise stated, the investment objectives and policies set forth
in this Prospectus are not fundamental and may be changed by the Trustees
without shareholder approval. Each Series is subject to additional investment
policies and restrictions described in the Statement of Additional Information,
some of which are fundamental and may not be changed without shareholder
approval.
 
     Currently, shares of the Trust are sold primarily to life insurance company
separate accounts ("Accounts") to fund the benefits of variable insurance or
annuity policies ("Policies") issued by life insurance companies. The Accounts
purchase shares of the Trust in accordance with variable account allocation
instructions received from owners of the Policies. The Trust then uses the
proceeds to buy securities for its Series. The investment adviser manages the
Series from day to day to accomplish the Trust's investment objectives. The
kinds of investments and the way they are managed depends on what is happening
in the economy and the financial marketplaces. Each of the Accounts, as a
shareholder, has an ownership in the Trust's investments. The Trust also offers
to buy back (redeem) shares of the Trust from the Accounts at any time at net
asset value.
 
     Jackson National Financial Services, Inc. ("JNFSI"), a wholly owned
subsidiary of Jackson National Life Insurance Company, serves as investment
adviser for all the Series of the Trust. Janus Capital Corporation serves as
sub-adviser for the JNL Capital Growth, JNL Aggressive Growth and JNL Global
Equities Series; Fred Alger Management, Inc. serves as sub-adviser for the
JNL/Alger Growth Series; PPM America, Inc. serves as sub-adviser for the PPM
America/JNL Money Market and PPM America/JNL High Yield Bond Series; Salomon
Brothers Asset Management Inc serves as sub-adviser for the Salomon Brothers/JNL
U.S. Government & Quality Bond and Salomon Brothers/JNL Global Bond Series; T.
Rowe Price Associates, Inc. serves as sub-adviser for the T. Rowe Price/JNL
Established Growth and T. Rowe Price/JNL Mid-Cap Growth Series; and Rowe
Price-Fleming International, Inc. serves as sub-adviser for the T. Rowe
Price/JNL International Equity Investment Series.
 
     Reference is made herein to ratings assigned to certain types of securities
by Standard & Poor's Ratings Group ("S&P"), Moody's Investors Service, Inc.
("Moody's"), Fitch Investors Service, Inc. ("Fitch"), Duff & Phelps, Inc. ("Duff
& Phelps") and Thomson BankWatch, Inc., recognized independent securities
ratings institutions. A description of the ratings categories assigned by S&P
and Moody's is contained in Appendix A.
 
DIVERSIFICATION
 
     Each of the Series except the JNL Capital Growth and JNL Aggressive Growth
Series qualifies as a diversified investment company under the Investment
Company Act of 1940 (the "1940 Act"). As a fundamental policy, a diversified
fund will not purchase a security of any issuer (except cash items and U.S.
Government securities) if a) it would cause the Series to own more than 10% of
the outstanding voting securities of that issuer or b) it would cause the
Series' holdings of that issuer to amount to more than 5% of the Series' total
assets (as applied in each case to 75% of the Series' total assets). As a
fundamental policy, the JNL Capital Growth and JNL Aggressive Growth Series also
will not purchase more than 10% of the outstanding voting securities of any
issuer; however, only 50% of total assets are subject to the 5% test. The JNL
Capital Growth and JNL Aggressive Growth Series may invest up to 50% of total
assets in the securities of as few as two issuers (not to exceed 25% in any one
issuer) while the other Series may invest up to 25% of their total assets in the
securities of one issuer. Neither the JNL Capital Growth nor the JNL Aggressive
Growth Series anticipates concentrating its holdings in so few issuers unless
its sub-adviser believes a security has the potential for substantial capital
appreciation consistent with a Series' investment policies and goals. To the
extent that any Series invests more than 5% of its assets in a particular
issuer, its exposure to credit risks and/or market risks associated with that
issuer increases. As an additional fundamental policy, no Series will invest
more than 25% of its total assets in any particular industry (other than U.S.
Government securities), except that the PPM America/JNL Money Market Series may
invest a greater percent of its assets in the domestic banking industry.
 
                                        8
<PAGE>   10
 
  INTERNAL REVENUE SERVICE (IRS) LIMITATIONS
 
     In addition to the diversification requirements stated above, each Series
intends to comply with the diversification requirements currently imposed by the
IRS on separate accounts of insurance companies as a condition of maintaining
the tax-deferred status of variable contracts. More specific information may be
contained in the participating insurance company's separate account prospectus.
 
- --------------------------------------------------------------------------------
                          JNL AGGRESSIVE GROWTH SERIES
- --------------------------------------------------------------------------------
 
     The investment objective of the JNL Aggressive Growth Series is long-term
growth of capital. It is a non-diversified Series that pursues its investment
objective by investing primarily in common stocks of issuers of any size,
including larger, well-established companies and smaller, emerging growth
companies. The smaller or newer a company is, the more likely it may be to
suffer more significant losses as well as realize more substantial growth than
larger or more established issuers.
 
- --------------------------------------------------------------------------------
                           JNL CAPITAL GROWTH SERIES
- --------------------------------------------------------------------------------
 
     The investment objective of the JNL Capital Growth Series is long-term
growth of capital in a manner consistent with the preservation of capital. It is
a non-diversified Series that pursues its investment objective by normally
investing at least 50% of its equity assets in securities issued by medium-sized
companies. Medium-sized companies are those whose market capitalizations fall
within the range of companies in the S&P MidCap 400 Index (the "MidCap Index").
Companies whose capitalization falls outside this range after the Series'
initial purchase continue to be considered medium-sized companies for the
purpose of this policy. As of December 29, 1995, the MidCap Index included
companies with capitalizations between approximately $118 million and $7.5
billion. The range of the MidCap Index is expected to change on a regular basis.
Subject to the above policy, the Series may also invest in smaller or larger
issuers.
 
- --------------------------------------------------------------------------------
                           JNL GLOBAL EQUITIES SERIES
- --------------------------------------------------------------------------------
 
     The investment objective of the JNL Global Equities Series is long-term
growth of capital in a manner consistent with the preservation of capital. It is
a diversified Series that pursues its investment objective primarily through
investments in common stocks of foreign and domestic issuers. The Series is
permitted to invest on a worldwide basis in companies and other organizations of
any size, regardless of country of organization or place of principal business
activity, as well as domestic and foreign governments, government agencies and
other governmental entities. The Series normally invests in securities of
issuers from at least five different countries, including the United States,
although the Series may at times invest all of its assets in fewer than five
countries. The JNL Global Equities Series may not be suitable for investors that
are not able to bear the additional risks associated with the Series' more
extensive holdings of foreign securities.
 
                                        9
<PAGE>   11
 
- --------------------------------------------------------------------------------
            JNL AGGRESSIVE GROWTH SERIES, JNL CAPITAL GROWTH SERIES,
                           JNL GLOBAL EQUITIES SERIES
- --------------------------------------------------------------------------------
 
     Each of the JNL Aggressive Growth, JNL Capital Growth, and JNL Global
Equities Series invests substantially all of its assets in common stocks when
its sub-adviser believes that the relevant market environment favors profitable
investing in those securities. Common stock investments are selected in
industries and companies that the sub-adviser believes are experiencing
favorable demand for their products and services, and which operate in a
favorable competitive environment and regulatory climate. The sub-adviser's
analysis and selection process focuses on stocks with earnings growth potential
that may not be recognized by the market. Such securities are selected primarily
for their capital growth potential; investment income is not a consideration.
These selection criteria apply equally to stocks of foreign issuers. In
addition, factors such as expected levels of inflation, government policies
influencing business conditions, the outlook for currency relationships, and
prospects for relative economic growth among countries, regions or geographic
areas may warrant greater consideration in selecting foreign stocks.
 
     Each of the JNL Aggressive Growth, JNL Capital Growth and JNL Global
Equities Series invests primarily in common stocks of foreign and domestic
companies. Each Series may invest to a lesser degree in other types of
securities, including preferred stock, warrants, convertible securities and debt
securities. Debt securities that the Series may purchase include corporate bonds
and debentures (not to exceed 35% of net assets in high-yield/high-risk bonds)
(See "Investment Risks -- High Yield/High Risk Bonds"); government securities;
mortgage- and asset-backed securities (not to exceed 25% of assets); zero coupon
bonds (not to exceed 10% of assets); indexed/structured notes; high-grade
commercial paper; certificates of deposit; and repurchase agreements. Such
securities may offer growth potential because of anticipated changes in interest
rates, credit standing, currency relationships or other factors. Each of these
Series may also invest in short-term debt securities as a means of receiving a
return on idle cash.
 
     When the Series' sub-adviser believes that market conditions are not
favorable for profitable investing or when the sub-adviser is otherwise unable
to locate favorable investment opportunities, the Series' investments may be
hedged to a greater degree and/or its cash or similar investments may increase.
In other words, the Series do not always stay fully invested in stocks and
bonds. Cash or similar investments are residual -- they represent the assets
that remain after the sub-adviser has committed available assets to desirable
investment opportunities. When a Series' cash position increases, it may not
participate in stock market advances or declines to the extent that it would if
it remained more fully invested in common stocks.
 
     Although JNL Global Equities Series is committed to foreign investing, each
of these Series may invest without limit in equity and debt securities of
foreign issuers. The Series may invest directly in foreign securities
denominated in a foreign currency and not publicly traded in the United States.
Other ways of investing in foreign securities include depositary receipts or
shares, and passive foreign investment companies. Each of these Series may use
futures, options and other derivatives for hedging purposes or as a means of
enhancing return. Some securities that these Series may purchase may be issued
on a when-issued, delayed delivery or forward commitment basis.
 
     Each of JNL Aggressive Growth, JNL Capital Growth and JNL Global Equities
Series may invest in "special situations" from time to time. A special situation
arises when, in the opinion of the sub-adviser, the securities of a particular
issuer will be recognized and appreciate in value due to a specific development
with respect to that issuer. Developments creating special situations might
include, among others, a new product or process, a technological breakthrough, a
management change or other extraordinary corporate event, or differences in
market supply of and demand for the security. Investment in special situations
may carry an additional risk of loss in the event that the anticipated
development does not occur or does not attract the expected attention. The
impact of this strategy on a Series will depend on the Series' size and the
extent of its holdings of special situation issuers relative to total net
assets.
 
                                       10
<PAGE>   12
 
- --------------------------------------------------------------------------------
                            JNL/ALGER GROWTH SERIES
- --------------------------------------------------------------------------------
 
     The investment objective of the JNL/Alger Growth Series is long-term
capital appreciation. It is a diversified Series that seeks to achieve its
objective by investing in equity securities, such as common or preferred stocks
that are listed on a national securities exchange, or securities convertible
into or exchangeable for equity securities, including warrants and rights.
Except during temporary defensive periods, the Series invests at least 85
percent of its net assets in equity securities and at least 65 percent of its
total assets in equity securities of companies that, at the time of purchase of
the securities, have total market capitalization of $1 billion or greater.
 
     It is anticipated that the Series will invest primarily in companies whose
securities are traded on domestic stock exchanges or in the over-the-counter
market. These companies may still be in the developmental stage, may be older
companies that appear to be entering a new stage of growth progress owing to
factors such as management changes or development of new technology, products or
markets or may be companies providing products or services with a high unit
volume growth rate. The Series may invest up to 35 percent of its total assets
in equity securities of companies that, at the time of purchase, have total
market capitalization of less than $1 billion. In order to afford the Series the
flexibility to take advantage of new opportunities for investments in accordance
with its investment objective, the Series may hold up to 15 percent of its net
assets in money market instruments and repurchase agreements. During temporary
defensive periods, the Series may invest up to 100% of its assets in debt
securities, money market instruments and/or repurchase agreements. The Portfolio
may also purchase restricted securities (subject to a limit on all illiquid
securities of 10 percent of net assets), lend its securities and enter into
"short sales against the box." See "Common Types of Securities and Management
Practices."
 
- --------------------------------------------------------------------------------
                     PPM AMERICA/JNL HIGH YIELD BOND SERIES
- --------------------------------------------------------------------------------
 
     The primary investment objective of the PPM America/JNL High Yield Bond
Series is a high level of current income; its secondary investment objective is
capital appreciation by investing in fixed income securities, with emphasis on
higher-yielding, higher-risk, lower-rated or unrated corporate bonds. It is a
diversified Series.
 
     Under normal market conditions, the Series will be invested substantially
in long-term (over 10 years to maturity) and intermediate-term (3 to 10 years to
maturity) fixed income securities, with emphasis on higher-yielding,
higher-risk, lower-rated or unrated corporate bonds. These high risk, high yield
bonds typically are subject to greater market fluctuations and risk of loss of
income and principal due to default by the issuer than are investments in
lower-yielding, higher-rated bonds. (See "Investment Risks -- High Yield/High
Risk Bonds").
 
     High risk, high yield bonds generally include any bonds that are rated Ba
or below by Moody's or BB or below by S&P or that are unrated but considered by
the sub-adviser to be of equivalent credit quality. Bonds rated Ba or BB or
below are considered speculative. The Series may invest without limitation in
bonds rated as low as Ca by Moody's or C by S&P (or unrated but considered by
the sub-adviser to be of equivalent quality). In addition, the Series may invest
up to 10% of its total assets in bonds rated C by Moody's or D by S&P (or
unrated but considered by the sub-adviser to be of equivalent quality).
High-yield bonds are riskier than lower-yielding, higher-rated bonds.
 
     In pursuing its secondary investment objective of capital appreciation, the
Series may purchase high yield bonds that are expected by the sub-adviser to
increase in value due to improvements in their credit quality or ratings or
anticipated declines in interest rates. In addition, the Series may invest for
this purpose up to 25% of its assets in equity securities, such as common
stocks, or other securities having common stock characteristics. Securities
designated as having common stock characteristics include, but are not limited
to, securities convertible into or exchangeable for common stock.
 
     Treating high current income as its primary investment objective means that
the Series may forego opportunities that would result in capital gains and may
accept prudent risks to capital value, in each case to take advantage of
opportunities for higher current income.
 
     Up to 25% of the Series' assets may be invested in securities of foreign
issuers, which are generally denominated in currencies other than the U.S.
dollar. The
 
                                       11
<PAGE>   13
 
Series also has the ability to hold a portion of its assets in foreign
currencies and to enter into forward foreign currency exchange contracts,
currency options, currency and financial futures contracts, and options on such
futures contracts. The Series may enter into repurchase agreements and firm
commitment agreements and may purchase securities on a when-issued basis.
Investment in foreign securities also involves special risks.
 
     Under normal market conditions, the Series will invest at least 65% of its
total assets in high risk, high yield bonds as described above. Subject to this
requirement, the Series may maintain assets in cash or cash equivalents,
including
commercial bank obligations (certificates of deposit, which are interest-bearing
time deposits; bankers' acceptances, which are time drafts on a commercial bank
for which the bank accepts an irrevocable obligation to pay at maturity; and
demand or time deposits), commercial paper (short-term notes issued by
corporations or governmental bodies) and obligations issued or guaranteed by the
U.S. Government. The Series may adopt temporary defensive position investment
policies during adverse market, economic or other circumstances that require
immediate action to avoid losses. During periods when and to the extent that the
Series has assumed a temporary defensive position, the Series may not be
pursuing its investment objective.
 
- --------------------------------------------------------------------------------
                      PPM AMERICA/JNL MONEY MARKET SERIES
- --------------------------------------------------------------------------------
 
     The investment objective of the PPM America/JNL Money Market Series is to
achieve as high a level of current income as is consistent with the preservation
of capital and maintenance of liquidity by investing in high quality, short-term
money market instruments. It is a diversified Series that pursues its investment
objective by investing mainly in debt, but the Series shall retain maximum
flexibility in the management of its portfolio.
 
     The PPM America/JNL Money Market Series invests in high quality money
market instruments. These instruments are considered to be among the safest
investments available because of their short maturities, liquidity and high
quality ratings.
 
     This Series will invest exclusively in the following types of high quality,
U.S. dollar denominated money market instruments that mature in 397 days or
less:
 
     - Obligations issued or guaranteed as to principal and interest by the U.S.
       Government, its agencies and instrumentalities.
 
     - Obligations, such as time deposits, certificates of deposit and bankers
       acceptances, issued by U.S. banks and savings banks that are members of
       the Federal Deposit Insurance Corporation, including their foreign
       branches and foreign subsidiaries, and issued by domestic and foreign
       branches of foreign banks.
 
     - Corporate obligations, including commercial paper, of domestic and
       foreign issuers.
 
     - Obligations issued or guaranteed by one or more foreign governments or
       any of their political subdivisions, agencies or instrumentalities,
       including obligations of supranational entities.
 
     - Repurchase agreements on obligations issued or guaranteed by the U.S.
       Government, its agencies or instrumentalities.
 
     Investments are managed to meet the quality and diversification
requirements of the 1940 Act. Under Rule 2a-7 under the 1940 Act, the Series
must maintain a dollar-weighted average portfolio maturity of 90 days or less
and may only purchase U.S. dollar denominated instruments that are determined to
present minimal credit risks and that at the time of acquisition are rated in
the top two rating categories by the required number of nationally recognized
statistical rating organizations (at least two or, if only one rating agency has
rated the security, that one agency) or, if unrated, are deemed comparable in
quality. Determination of credit risks and quality will be made by the
sub-adviser in accordance with procedures adopted by the Trust's Board of
Trustees. The diversification requirements of Rule 2a-7 provide generally that
the Series may not at the time of acquisition invest more than 5% of its assets
in securities of any one issuer or invest more than 5% of its assets in
securities that have not been rated in the highest category by the required
number of rating agencies or, if unrated, have not been deemed comparable,
except U.S. Government securities and repurchase agreements on such securities.
A more complete description of the rating categories is set forth under Appendix
A.
 
                                       12
<PAGE>   14
 
     The PPM America/JNL Money Market Series may invest more than 25% of its
total assets in the domestic banking industry, which would cause the Series to
be more exposed to the risks of such industry. Bank obligations held by the
Series do not benefit materially from insurance from the Federal Deposit
Insurance Corporation. The 25% limitation does not apply to U.S. Government
securities, including obligations issued or guaranteed by its agencies or
instrumentalities.
 
- --------------------------------------------------------------------------------
                    SALOMON BROTHERS/JNL GLOBAL BOND SERIES
- --------------------------------------------------------------------------------
 
     The primary investment objective of the Salomon Brothers/JNL Global Bond
Series is to seek a high level of current income. As a secondary objective, the
Series will seek capital appreciation. It is a diversified Series. The Series
seeks to achieve its objectives by investing in a globally diverse portfolio of
fixed income investments and by giving the sub-adviser broad discretion to
deploy the assets among certain segments of the fixed income market that the
sub-adviser believes will best contribute to the achievement of the Series'
objectives. At any point in time, the sub-adviser will deploy the Series' assets
based on its analysis of current economic and market conditions and the relative
risks and opportunities present in the following market segments: U.S.
Government obligations, investment grade domestic corporate debt, high yield
domestic corporate debt securities, mortgage-backed securities and investment
grade and high yield foreign corporate and sovereign debt securities. The
sub-adviser has entered into a sub-advisory consulting agreement with its London
based affiliate, Salomon Brothers Asset Management Limited ("SBAM Limited")
pursuant to which SBAM Limited will provide certain advisory services to the
sub-adviser relating to currency transactions and investments in non-dollar
denominated debt securities for the benefit of the Series.
 
     The sub-adviser will determine the amount of assets to be allocated to each
type of security in which it invests based on its assessment of the maximum
level of income and capital appreciation that can be achieved from a portfolio
which is invested in these securities. In making this determination, the
sub-adviser will rely in part on quantitative analytical techniques that measure
relative risks and opportunities of each type of security based on current and
historical economic, market, political and technical data for each type of
security, as well as on its own assessment of economic and market conditions
both on a global and local (country) basis. In performing quantitative analysis,
the sub-adviser will employ prepayment analysis and option adjusted spread
technology to evaluate mortgage securities, mean variance optimization models to
evaluate foreign debt securities, and total rate of return analysis to measure
relative risks and opportunities in other fixed income markets. Economic factors
considered will include current and projected levels of growth and inflation,
balance of payments, status and monetary policy. The allocation of assets to
foreign debt securities will further be influenced by current and expected
currency relationships and political and sovereign factors. The sub-adviser will
continuously review this allocation of assets and make such adjustments as it
deems appropriate. The Series does not plan to establish a minimum or a maximum
percentage of the assets which it will invest in any particular type of fixed
income security.
 
     In addition, the sub-adviser will have discretion to select the range of
maturities of the various fixed income securities in which the Series invests.
The sub-adviser anticipates that under current market conditions the Series'
portfolio securities will have a weighted average life of 6 to 10 years.
However, the weighted average life of the portfolio securities may vary
substantially from time to time depending on economic and market conditions. The
Series may adopt temporary defensive position investment policies during adverse
market, economic or other circumstances that require immediate action to avoid
losses. During periods when and to the extent that the Series has assumed a
temporary defensive position, the Series may not be pursuing its investment
objective.
 
     The investment grade corporate debt securities and the investment grade
foreign debt securities to be purchased by the Series are domestic and foreign
debt securities rated within the four highest bond ratings of either Moody's or
S&P, or, if unrated, deemed to be of equivalent quality in the sub-adviser's
judgment. While debt securities carrying the fourth highest quality rating (Baa
by Moody's or BBB by S&P) are considered investment grade and are viewed to have
adequate capacity for payment of principal and interest, investments in such
securities involve a higher degree of risk than that associated with investments
in debt securities in the higher rating categories and such debt securities lack
outstanding investment characteristics and in fact have speculative
characteristics as well. For example, changes in economic conditions or other
circumstances are more likely to lead to a weakened capacity to make principal
and interest payments than is the case with higher grade debt securities.
 
                                       13
<PAGE>   15
 
     The types and characteristics of the U.S. Government obligations and
mortgage-backed securities to be purchased by the Series are set forth below in
the discussion of investment objectives and policies for the Salomon
Brothers/JNL U.S. Government & Quality Bond Series. In addition, the Series may
purchase privately issued mortgage securities which are not guaranteed by the
U.S. Government or its agencies or instrumentalities and may purchase stripped
mortgage securities, including interest-only and principal-only securities.
Additional information with respect to securities to be purchased by the Series
is set forth below under the section entitled "Common Types of Securities and
Management Practices" and "Investment Risks."
 
     The Series may invest in debt obligations issued or guaranteed by a foreign
sovereign government or one of its agencies or political subdivisions and debt
obligations issued or guaranteed by supranational organizations. Supranational
entities include international organizations designated or supported by
governmental entities to promote economic reconstruction or development and
international banking institutions and related government agencies. Examples
include the International Bank for Reconstruction and Development (the "World
Bank"), the European Coal and Steel Community, the Asian Development Bank and
the Inter-American Development Bank. Such supranational issued instruments may
be denominated in multi-national currency units.
 
     In pursuing the Series' investment objectives, the Series reserves the
right to invest predominantly in medium or lower-rated securities. Although the
Series has the ability to invest up to 100% of its assets in lower-rated
securities, the Series' subadviser does not anticipate investing in excess of
75% of the Series' assets in such securities. Investments of this type involve
significantly greater risks, including price volatility and risk of default in
the payment of interest and principal, than higher-quality securities. The
sub-adviser anticipates that under current market conditions, a significant
portion of the Series assets will be invested in such high risk, high yield
securities. By investing a portion of the Series' assets in securities rated
below investment grade as well as through investments in mortgage securities and
foreign debt securities, the sub-adviser expects to provide investors with a
higher yield than a high-quality domestic corporate bond fund. Certain of the
debt securities in which the Series may invest may be rated as low as C by
Moody's or D by S&P or may be considered comparable to securities having such
ratings. Medium and lower-rated securities are considered to be predominantly
speculative with respect to the issuer's capacity to pay interest and repay
principal.
 
     In light of the risks associated with high yield corporate and sovereign
debt securities, the sub-adviser will take various factors into consideration in
evaluating the creditworthiness of an issuer. For corporate debt securities,
these will typically include the issuer's financial resources, its sensitivity
to economic conditions and trends, the operating history of the issuer, and the
experience and track record of the issuer's management. For sovereign debt
instruments, these will typically include the economic and political conditions
within the issuer's country, the issuer's overall and external debt levels and
debt service ratios, the issuer's access to capital markets and other sources of
funding, and the issuer's debt service payment history. The sub-adviser will
also review the ratings, if any, assigned to the security by any recognized
rating agencies, although the sub-adviser's judgment as to the quality of a debt
security may differ from that suggested by the rating published by a rating
service. The Series' ability to achieve its investment objective may be more
dependent on the sub-adviser's credit analysis than would be the case if it
invested in higher quality debt securities.
 
     The high yield sovereign debt securities in which the Series may invest are
U.S. dollar-denominated and non-dollar-denominated debt securities, including
Brady Bonds, that are issued or guaranteed by governments or governmental
entities of developing and emerging countries. The sub-adviser expects that
these countries will consist primarily of those which have issued or have
announced plans to issue Brady Bonds, but the portfolio is not limited to
investing in the debt of such countries. Brady Bonds are debt securities issued
under the framework of the Brady Plan, an initiative announced by former U.S.
Treasury Secretary Nicholas F. Brady in 1989 as a mechanism for debtor nations
to restructure their outstanding external indebtedness. (See "Investment Risks
- -- High Yield/ High Risk Bonds"). The sub-adviser anticipates that the Series'
initial investments in sovereign debt will be concentrated in Latin American
countries, including Mexico and Central and South American and Caribbean
countries. The sub-adviser expects to take advantage of additional opportunities
for investment in the debt of North African countries, such as Nigeria and
Morocco, Eastern European countries, such as Poland and Hungary, and Southeast
Asian countries, such as the Philippines. Sovereign governments may include
national, provincial, state, municipal or other foreign governments with taxing
authority. Governmental entities may include the agencies and instrumentalities
of such governments, as well as state-owned enterprises. For a more detailed
discussion of high yield sovereign debt securities, see "Investment Risks --
High Yield/ High Risk Bonds" section.
 
                                       14
<PAGE>   16
 
     The Series will be subject to special risks as a result of its ability to
invest up to 100% of its assets in foreign securities (including emerging market
securities). Such securities may be non-U.S. dollar denominated and there is no
limit on the percentage of the Series' assets that can be invested in non-dollar
denominated securities. The sub-adviser anticipates that, under current market
conditions, a significant portion of the Series' assets will be invested in
foreign securities. These risks are described under the caption "Investment
Risks." The ability to spread its investments among the fixed income markets in
a number of different countries may, however, reduce the overall level or market
risk to the extent it may reduce the Series' exposure to a single market.
 
     The Series may invest in zero coupon securities and pay-in-kind bonds. In
addition, the Series may invest in fixed and floating rate loans ("Loans")
arranged through private negotiations between a corporate borrower or a foreign
sovereign entity and one or more financial institutions ("Lenders"). The Series
may invest in such Loans in the form of participations in Loans
("Participations") and assignments of all or a portion of Loans from third
parties ("Assignments"). The Series considers these investments to be
investments in debt securities for purposes of this Prospectus. Participations
typically will result in the Series having a contractual relationship only with
the Lender, not with the borrower. The Series will have the right to receive
payments of principal, interest and any fees to which it is entitled only from
the Lender selling the Participation and only upon receipt by the Lender of the
payments from the borrower. In connection with purchasing Participations, the
Series generally will have no right to enforce compliance by the borrower with
the terms of the loan agreement relating to the Loan, nor any rights of set-off
against the borrower, and the Series may not benefit directly from any
collateral supporting the Loan in which it has purchased the Participation. As a
result, the Series will assume the credit risk of both the borrower and the
Lender that is selling the Participation. In the event of the insolvency of the
Lender selling a Participation, the Series may be treated as a general creditor
of the Lender and may not benefit from any set-off between the Lender and the
borrower. The Series will acquire Participations only if the Lender
interpositioned between the Series and the borrower is determined by the
sub-adviser to be creditworthy. When the Series purchases Assignments from
Lenders, the Series will acquire direct rights against the borrower on the Loan,
except that under certain circumstances such rights may be more limited than
those held by the assigning Lender.
 
     The Series may have difficulty disposing of Assignments and Participations.
Because the market for such instruments is not highly liquid, the Series
anticipates that such instruments could be sold only to a limited number of
institutional investors. The lack of a highly liquid secondary market may have
an adverse impact on the value of such instruments and will have an adverse
impact on the Series' ability to dispose of particular Assignments or
Participations in response to a specific economic event, such as deterioration
in the creditworthiness of the borrower. The Series currently treats investments
in Participations and Assignments as illiquid for purposes of its limitation on
investment in illiquid securities. However, the Trustees may in the future adopt
policies and procedures for the purpose of determining whether Assignments and
Loan Participations are liquid or illiquid. Pursuant to such policies and
procedures, the Trustees would delegate to the sub-adviser the determination as
to whether a particular Loan Participation or Assignment is liquid or illiquid,
requiring that consideration be given to, among other things, the frequency of
quotes, the number of dealers willing to sell and the number of potential
purchasers, the nature of the Loan Participation or Assignment and the time
needed to dispose of it and the contractual provisions of the relevant
documentation. The Trustees would periodically review purchases and sales of
Assignments and Loan Participations. To the extent that liquid Assignments and
Loan Participations that the Series held became illiquid, due to the lack of
sufficient buyers or market or other conditions, the percentage of the Series'
assets invested in illiquid assets would increase.
 
     The Series may invest up to 20% of its assets in common stock, convertible
securities, warrants, preferred stock or other equity securities when consistent
with the Series' objectives. The Series will generally hold such equity
investments as a result of purchases of unit offerings of fixed income
securities which include such securities or in connection with an actual or
proposed conversion or exchange of fixed income securities, but may also
purchase equity securities not associated with fixed income securities when, in
the opinion of the sub-adviser, such purchase is appropriate.
 
     The Series currently intends to invest substantially all of its assets in
fixed income securities. In order to maintain liquidity, however, the Series may
invest up to 20% of its assets in high-quality short-term money market
instruments. If at some future date, in the opinion of the sub-adviser, adverse
conditions prevail in the market for fixed income securities, the Series for
temporary defensive purposes may invest its assets without limit in high-quality
short-term money market instruments. The types and characteristics of the money
market securities to be purchased by the Series are set forth in the discussion
of investment objectives and policies of PPM America/JNL Money Market Series.
Potential investors should review
 
                                       15
<PAGE>   17
 
the discussion therein in considering an investment in shares of the Series.
 
     The Series may enter into repurchase and reverse repurchase agreements,
purchase securities on a firm commitment basis, including when-issued
securities, lend portfolio securities and enter into mortgage "dollar rolls."
The Series may also enter into options, futures and currency transactions,
although with the exception of currency transactions, it is not presently
anticipated that any of these strategies will be utilized to a significant
degree by the Series. For a description of these investment practices and the
risks associated with them, see "Common Types of Securities and Management
Practices" and "Investment Risks." The Series' ability to pursue certain of
these strategies may be limited by applicable regulations of the Securities and
Exchange Commission ("SEC"), the Commodity Futures Trading Commission ("CFTC")
and the federal income tax requirements applicable to regulated investment
companies.
 
                                       16
<PAGE>   18
 
- --------------------------------------------------------------------------------
           SALOMON BROTHERS/JNL U.S. GOVERNMENT & QUALITY BOND SERIES
- --------------------------------------------------------------------------------
 
     The investment objective of the Salomon Brothers/JNL U.S. Government &
Quality Bond Series is to obtain a high level of current income. It is a
diversified Series that seeks to attain its objective by investing primarily in
debt obligations and mortgage-backed securities issued or guaranteed by the U.S.
Government, its agencies or instrumentalities including collateralized mortgage
obligations backed by such securities. The Series may also invest a portion of
its assets in investment grade bonds.
 
     At least 65% of the total assets of the Series will be invested in:
 
     (1) U.S. Treasury obligations;
 
     (2) obligations issued or guaranteed by agencies or instrumentalities of
         the U.S. Government which are backed by their own credit and may not be
         backed by the full faith and credit of the U.S. Government;
 
     (3) mortgage-backed securities guaranteed by the Government National
         Mortgage Association that are supported by the full faith and credit of
         the U.S. Government. Such securities entitle the holder to receive all
         interest and principal payments due whether or not payments are
         actually made on the underlying mortgages;
 
     (4) mortgage-backed securities guaranteed by agencies or instrumentalities
         of the U.S. Government which are supported by their own credit but not
         the full faith and credit of the U.S. Government, such as the Federal
         Home Loan Mortgage Corporation and the Federal National Mortgage
         Association; and
 
     (5) collateralized mortgage obligations issued by private issuers for which
         the underlying mortgage-backed securities serving as collateral are
         backed (i) by the credit alone of the U.S. Government agency or
         instrumentality which issues or guarantees the mortgage-backed
         securities, or (ii) by the full faith and credit of the U.S.
         Government.
 
     Any guarantee of the securities in which the Series invests runs only to
the principal and interest payments on the securities and not to the market
value of such securities or to the principal and interest payments on the
underlying mortgages. In addition, the guarantee only runs to the portfolio
securities held by the Series and not the purchase of shares of the Series.
 
     The Series may invest in securities of any maturity or effective duration
and, accordingly, the composition and weighted average maturity of the Series'
portfolio will vary from time to time, based upon the sub-adviser's
determination of how best to achieve the Series' investment objective. With
respect to mortgage-backed securities in which the Series invests, average
maturity and duration are determined by using mathematical models that
incorporate prepayment assumptions and other factors that involve estimates of
future economic parameters. These estimates may vary from actual results,
particularly during periods of extreme market volatility. In addition, the
average maturity and duration of mortgage-backed derivative securities may not
accurately reflect the price volatility of such securities under certain market
conditions. From time to time, a significant portion of the Series' assets may
be invested in mortgage-backed securities. The mortgage-backed securities in
which the Series invests represent participating interests in pools of fixed
rate and adjustable rate residential mortgage loans issued or guaranteed by
agencies or instrumentalities of the U.S. Government.
 
     Mortgage-backed securities are issued by lenders such as mortgage bankers,
commercial banks, and savings and loan associations. Mortgage-backed securities
generally provide monthly payments which are, in effect, a "pass-through" of the
monthly interest and principal payments (including any prepayments) made by the
individual borrowers on the pooled mortgage loans. Principal prepayments result
from the sale of the underlying property or the refinancing or foreclosure of
underlying mortgages.
 
     The yield of mortgage-backed securities is based upon the prepayment rates
experienced over the life of the security. Prepayments tend to increase during
periods of falling interest rates, while during periods of rising interest rates
prepayments will most likely decline. Reinvestment by the Series of scheduled
principal payments and unscheduled prepayments may occur at higher or lower
rates than the original investment, thus affecting the yield of the Series.
Monthly interest payments received by the Series have a compounding effect which
will increase the yield to shareholders as compared to debt obligations that pay
interest semi-annually. Because of the reinvestment of prepayments of principal
at current rates, mortgage-backed securities may be less effective than Treasury
bonds of similar maturity at maintaining yields during periods of declining
interest rates. Also, although the value
 
                                       17
<PAGE>   19
 
of debt securities may increase as interest rates decline, the value of these
pass-through type of securities may not increase as much due to the prepayment
feature.
 
     While the Series seeks a high level of current income, it cannot invest in
instruments such as lower grade corporate obligations which offer higher yields
but are subject to greater credit risks. The Series will not knowingly invest in
a high risk mortgage security. The term "high risk mortgage security" is defined
generally as any mortgage security that exhibits significantly greater price
volatility than a benchmark security, the Federal National Mortgage Association
current coupon 30-year mortgage-backed pass through security. Shares of the
Series are neither insured nor guaranteed by the U.S. Government, its agencies
or instrumentalities. Neither the issuance by nor the guarantee of a U.S.
Government agency for a security constitutes assurance that the security will
not significantly fluctuate in value or that the Series will receive the
originally anticipated yield on the security.
 
     The Series may also invest up to 35% of its assets in U.S.
dollar-denominated securities rated AAA, AA, A or BBB by S&P or Aaa, Aa, A or
Baa by Moody's, or if unrated, determined to be of comparable quality to
securities in those ratings categories by the sub-adviser. The Series may not
invest more than 10% of total assets in obligations of foreign issuers.
Investments in foreign securities will subject the Series to special
considerations related to political, economic and legal conditions outside of
the U.S., as discussed under the "Investment Risks" section. These
considerations include the possibility of expropriation, nationalization,
withholding taxes on income and difficulties in enforcing judgments. Foreign
securities may be less liquid and more volatile than comparable U.S. securities.
 
     The Series may enter into repurchase and reverse repurchase agreements,
purchase securities on a firm commitment basis, including when-issued
securities, and lend portfolio securities. The Series may also enter into
mortgage "dollar rolls." For a description of these investment practices and the
risks associated with them, see "Common Types of Securities and Management
Practices" and "Investment Risks."
 
- --------------------------------------------------------------------------------
                  T. ROWE PRICE/JNL ESTABLISHED GROWTH SERIES
- --------------------------------------------------------------------------------
 
     The investment objective of the T. Rowe Price/JNL Established Growth Series
is to seek long-term growth of capital and increasing dividend income through
investment primarily in common stocks of well-established growth companies. A
growth company is defined as one which: (1) has demonstrated historical growth
of earnings faster than the growth of inflation and the economy in general; and
(2) has indications of being able to continue this growth pattern in the future.
Total return will consist primarily of capital appreciation or depreciation and
secondarily of dividend income.
     It is a diversified Series that will invest primarily in the common stock
of a diversified group of well-established growth companies. While current
dividend income is not a prerequisite in the selection of a growth company, the
companies in which the Series will invest normally have a record of paying
dividends and are generally expected to increase the amounts of such dividends
in future years as earnings increase. Although the Series will invest primarily
in U.S. common stocks, it may also purchase other types of securities, for
example, foreign securities, convertible securities, warrants, hybrid
instruments, restricted securities, futures and options, when considered
consistent with the Series' investment objective and program.
 
- --------------------------------------------------------------------------------
            T. ROWE PRICE/JNL INTERNATIONAL EQUITY INVESTMENT SERIES
- --------------------------------------------------------------------------------
 
     The investment objective of the T. Rowe Price/JNL International Equity
Investment Series is to seek long-term growth of capital through investments
primarily in common stocks of established, non-U.S. companies. Total return
consists of capital appreciation or depreciation, dividend income, and currency
gains or losses.
     Over the last 30 years, many foreign economies have grown faster than the
United States' economy, and the return from equity investments in these
countries has often exceeded the return on similar investments in the United
States. Moreover, there has normally been a wide and largely unrelated variation
in performance between international equity markets over this period. Although
there can be no assurance that these conditions will continue, the Series'
sub-adviser, within the framework of diversification, seeks to identify and
invest in companies participating in the faster growing foreign economies and
markets. The sub-adviser believes that investment in foreign securities offers
significant potential for long-term capital appreciation and an opportunity to
achieve
 
                                       18
<PAGE>   20
 
investment diversification. The Series may also purchase other types of
securities, for example, common and preferred stocks, convertible securities,
fixed income securities, hybrid instruments, restricted securities, foreign
currency transactions, futures and options.
 
     In analyzing companies for investment, the sub-adviser ordinarily looks for
one or more of the following characteristics: an above-average earnings growth
per share; high return on invested capital; healthy balance sheet; sound
financial and accounting policies and overall financial strength; strong
competitive advantages; effective research and product development and
marketing; efficient service; pricing flexibility; strength of management; and
general operating characteristics which will enable the companies to compete
successfully in their market place. While current dividend income is not a
prerequisite in the selection of portfolio companies, the companies in which the
Series invests, normally will have a record of paying dividends, and will
generally be expected to increase the amounts of such dividends in future years
as earnings increase.
 
     It is a diversified Series that intends to diversify investments broadly
among countries and to normally have at least three different countries
represented in the Series. The Series may invest in countries of the Far East
and Europe, as well as South Africa, Australia, Canada and other areas
(including developing countries). Under unusual circumstances, however, the
Series may invest substantially all of its assets in one or two countries.
 
- --------------------------------------------------------------------------------
                    T. ROWE PRICE/JNL MID-CAP GROWTH SERIES
- --------------------------------------------------------------------------------
 
     The investment objective of the T. Rowe Price/JNL Mid-Cap Growth Series is
to provide long-term growth of capital by investing primarily in the common
stock of companies with medium-sized market capitalizations ("mid-cap") and the
potential for above-average growth.
 
     It is a diversified Series that will invest at least 65% of its total
assets in a diversified portfolio of mid-cap common stocks with above-average
growth potential. A mid-cap company is defined as one whose market
capitalization falls within the capitalization range of companies included in
the S&P 400 Mid-Cap Index. Mid-cap growth companies are often still in the
early, more dynamic phase of a company's life cycle, but have enough corporate
history that they are no longer considered new or emerging. By focusing their
activities, mid-cap companies may be more responsive and better able to adapt to
the changing needs of their markets. They are usually mature enough to have
established organizational structures and the depth of management needed to
expand their operations. In addition, these companies generally have sufficient
financial resources and access to capital to finance their growth.
 
     While investing in mid-cap growth companies generally entails greater risk
and volatility than investing in large, well-established companies, mid-cap
companies are expected to offer the potential for more rapid growth. They may
also offer greater potential for capital appreciation because of their higher
growth rates. In addition, the stocks of such companies are less actively
followed by securities analysts and may, therefore, be undervalued by investors.
 
     The sub-adviser will rely on its proprietary research to identify mid-cap
companies with attractive growth prospects. The Series will seek to invest
primarily in companies which: 1) offer proven products or services, 2) have a
historical record of earnings growth that is above average, 3) demonstrate the
potential to sustain earnings growth, 4) operate in industries experiencing
increasing demand, and/or 5) are believed to be reasonably valued in the
marketplace. There is, of course, no guarantee the Series will be able to
identify such companies or that its investment in them will be successful.
 
     Although the Series will invest primarily in U.S. common stocks, it may
also purchase other types of securities, for example, foreign securities,
convertible securities, restricted securities, hybrid instruments, warrants,
futures and options, when considered consistent with the Series' investment
objective and program.
 
                                       19
<PAGE>   21
 
- --------------------------------------------------------------------------------
              COMMON TYPES OF SECURITIES AND MANAGEMENT PRACTICES
- --------------------------------------------------------------------------------
 
SECURITIES AND MANAGEMENT PRACTICES
 
     This section describes some of the types of securities a Series may hold in
its portfolio and the various kinds of investment practices that may be used in
day-to-day portfolio management. A Series may invest in the following securities
or engage in the following practices to the extent that such securities and
practices are consistent with the Series' investment objective and policies
described herein. Each Series' investment program is subject to further
restrictions described in the Statement of Additional Information.
 
     BORROWING AND LENDING. A Series may borrow money from banks for temporary
or emergency purposes in amounts up to 25% of its total assets. To secure
borrowings a Series may mortgage or pledge securities in amounts up to 15% of
its net assets. As a fundamental policy, a Series will not lend securities or
other assets if, as a result, more than 25% of its total assets would be lent to
other parties.
 
     CASH POSITION. A Series may hold a certain portion of its assets in
repurchase agreements and money market securities rated in one of the two
highest rating categories by a nationally recognized statistical rating
organization, maturing in one year or less. For temporary, defensive purposes, a
Series may invest without limitation in such securities. This reserve position
provides flexibility in meeting redemptions, expenses, and the timing of new
investments, and serves as a short-term defense during periods of unusual market
volatility.
 
     COMMON AND PREFERRED STOCKS. Stocks represent shares of ownership in a
company. Generally, preferred stock has a specified dividend and ranks after
bonds and before common stocks in its claim on income for dividend payments and
on assets should the company be liquidated. After other claims are satisfied,
common stockholders participate in company profits on a pro rata basis; profits
may be paid out in dividends or reinvested in the company to help it grow.
Increases and decreases in earnings are usually reflected in a company's stock
price, so common stocks generally have the greatest appreciation and
depreciation potential of all corporate securities. While most preferred stocks
pay a dividend, a Series may purchase preferred stock where the issuer has
omitted, or is in danger of omitting, payment of its dividend. Such investments
would be made primarily for their capital appreciation potential. Although
common and preferred stocks have a history of long-term growth in value, their
prices tend to fluctuate in the short term, particularly those of smaller
companies.
 
     CONVERTIBLE SECURITIES AND WARRANTS. A Series may invest in debt or
preferred equity securities convertible into or exchangeable for equity
securities. Traditionally, convertible securities have paid dividends or
interest at rates higher than common stocks but lower than non-convertible
securities. They generally participate in the appreciation or depreciation of
the underlying stock into which they are convertible, but to a lesser degree. In
recent years, convertibles have been developed which combine higher or lower
current income with options and other features. Warrants are options to buy a
stated number of shares of common stock at a specified price any time during the
life of the warrants (generally, two or more years).
 
     FIXED INCOME SECURITIES. A Series may invest in fixed income securities of
companies which meet the investment criteria for the Series. The price of fixed
income securities fluctuates with changes in interest rates, generally rising
when interest rates fall and falling when interest rates rise. Prices of
longer-term securities generally increase or decrease more sharply than those of
shorter-term securities in response to interest rate changes.
 
     FOREIGN CURRENCY TRANSACTIONS. A Series will normally conduct its foreign
currency exchange transactions either on a spot (i.e., cash), basis at the spot
rate prevailing in the foreign currency exchange market, or through entering
into forward contracts to purchase or sell foreign currencies. A Series will
generally not enter into a forward contract with a term of greater than one
year.
 
     There are certain markets where it is not possible to engage in effective
foreign currency hedging. This may be true, for example, for the currencies of
various countries where the foreign exchange markets are not sufficiently
developed to permit hedging activity to take place.
 
     FOREIGN SECURITIES. A Series may invest in foreign securities. These
include non-dollar denominated securities traded principally outside the U.S.
and dollar denominated securities traded in the U.S. (such as ADRs). Such
investments increase a Series' diversification and may enhance return, but they
also involve some special risks such as exposure to potentially adverse local
political and economic developments; nationalization and exchange controls;
potentially lower liquidity and higher volatility; possible problems arising
from accounting, disclosure, settlement, and regulatory practices that differ
from U.S. standards; and the chance that fluctuations in foreign exchange rates
will decrease the investment's value (favorable changes can increase its value).
 
                                       20
<PAGE>   22
 
     FUTURES AND OPTIONS. Futures are often used to manage risk, because they
enable the investor to buy or sell an asset in the future at an agreed upon
price. Options give the investor the right, but not the obligation, to buy or
sell an asset at a predetermined price in the future. A Series may buy and sell
futures contracts (and options on such contracts) to manage its exposure to
changes in securities prices and foreign currencies and as an efficient means of
adjusting overall exposure to certain markets. Subject to certain limits
described in the Statement of Additional Information, a Series may purchase or
sell call and put options on securities, financial indices, and foreign
currencies, and may invest in futures contracts on foreign currencies and
financial indices, including interest rates or an index of U.S. Government
securities, foreign government securities or equity or fixed income securities.
 
     Futures contracts and options may not always be successful hedges; their
prices can be highly volatile; using them could lower a Series' total return;
and the potential loss from the use of futures can exceed the Series' initial
investment in such contracts. These instruments may also be used for non-hedging
purposes such as increasing a Series' income.
 
     The Series' use of commodity futures and commodity options trading should
not be viewed as providing a vehicle for shareholder participation in a
commodity pool. Rather, in accordance with regulations adopted by the CFTC, a
Series will employ such techniques only for (1) hedging purposes, or (2)
otherwise, to the extent that aggregate initial margin and required premiums do
not exceed 5 percent of the Series' net assets.
 
     ILLIQUID SECURITIES. Each Series may invest up to 15% of its net assets
(10% in the case of the PPM America/JNL Money Market Series and the JNL/Alger
Growth Series) in securities that are considered illiquid. Illiquid investments
include repurchase agreements not terminable within seven days, securities for
which market quotations are not readily available and certain restricted
securities. Illiquid investments may be difficult to sell promptly at an
acceptable price. Difficulty in selling securities may result in a loss or may
be costly to a Series. Certain restricted securities may be determined to be
liquid in accordance with guidelines adopted by the Trust's Board of Trustees.
 
     HIGH YIELD BONDS. A Series may invest its assets in fixed income securities
offering high current income that are in the lower rating categories of
recognized rating agencies or are non-rated. These lower-rated fixed income
securities are considered on balance, as predominantly speculative with respect
to capacity to pay interest and repay principal in accordance with the terms of
the obligation and generally will involve more credit risk than securities in
the higher rating categories.
 
     HYBRID INSTRUMENTS. These instruments can combine the characteristics of
securities, futures and options. For example, the principal amount, redemption
or conversion terms of a security could be related to the market price of some
commodity, currency or securities index. Such securities may bear interest or
pay dividends at below market (or even relatively nominal) rates. Under certain
conditions, the redemption value of such an investment could be zero. Hybrids
can have volatile prices and limited liquidity and their use by a Series may not
be successful.
 
     MORTGAGE- AND ASSET-BACKED SECURITIES. A Series may invest in mortgage- and
asset-backed securities. These securities are subject to prepayment risk, that
is, the possibility that prepayments on the underlying mortgages or other loans
will cause the principal and interest on the mortgage- and asset-backed
securities to be paid prior to their stated maturities. A sub-adviser will
consider estimated prepayment rates in calculating the average weighted
maturities of the Series. Unscheduled prepayments are more likely to accelerate
during periods of declining long-term interest rates. In the event of a
prepayment during a period of declining interest rates, a Series may be required
to invest the unanticipated proceeds at a lower interest rate. Prepayments
during such periods will also limit a Series' ability to participate in as large
a market gain as may be experienced with a comparable security not subject to
prepayment.
 
     The Salomon Brothers/JNL Global Bond Series may purchase stripped
mortgage-backed securities, which may be considered derivative mortgage-backed
securities, which may be issued by agencies or instrumentalities of the U.S.
Government or by private entities. Stripped mortgage-backed securities have
greater volatility than other types of mortgage-backed securities. Stripped
mortgage-backed securities are structured with two or more classes that receive
different proportions of the interest and principal distributions on a pool of
mortgage assets. In the most extreme case, one class will receive all of the
interest, while the other class will receive all of the principal. The yield to
maturity of such mortgage backed securities that are purchased at a substantial
discount or premium are extremely sensitive to changes in interest rates as well
as to the rate of principal payments (including prepayments) on the related
underlying mortgage assets.
 
     MORTGAGE DOLLAR ROLLS. Certain Series may enter into mortgage "dollar
rolls" in which a Series sells mortgage-backed securities for delivery in the
current month and simultaneously contracts to repurchase substantially similar
(same type, coupon and maturity) securities on a specified future date. During
the roll period, a
 
                                       21
<PAGE>   23
 
Series foregoes principal and interest paid on the mortgage-backed securities. A
Series is compensated by the interest earned on the cash proceeds of the initial
sale and from negotiated fees paid by brokers offered as an inducement to the
Series to "roll over" its purchase commitments. A Series may only enter into
covered rolls. A "covered roll" is a specific type of dollar roll for which
there is an offsetting cash position which matures on or before the forward
settlement date of the dollar roll transaction. At the time a Series enters into
a mortgage "dollar roll", it will establish a segregated account with its
custodian bank in which it will maintain cash, U.S. Government securities or
other liquid high grade debt obligations equal in value to its obligations in
respect of dollar rolls, and accordingly, such dollar rolls will not be
considered borrowings. Mortgage dollar rolls involve the risk that the market
value of the securities the Series is obligated to repurchase under the
agreement may decline below the repurchase price. In the event the buyer of
securities under a mortgage dollar roll files for bankruptcy or becomes
insolvent, the Series' use of proceeds of the dollar roll may be restricted
pending a determination by the other party, or its trustee or receiver, whether
to enforce the Series' obligation to repurchase the securities.
 
     COLLATERALIZED MORTGAGE OBLIGATIONS (CMOS). A Series may invest in CMOs.
CMOs are bonds that are collateralized by whole loan mortgages or mortgage pass-
through securities. In recent years, new types of CMO structures have evolved.
These include floating rate CMOs, planned amortization classes, accrual bonds,
and CMO residuals. Under certain of these new structures, given classes of CMOs
have priority over others with respect to the receipt of prepayments on the
mortgages. Therefore, depending on the type of CMOs in which the Series invests,
the investment may be subject to a greater or lesser risk of prepayment than
other types of mortgage-related securities.
 
     The primary risk of any mortgage security is the uncertainty of the timing
of cash flows. For CMOs, the primary risk results from the rate of prepayments
on the underlying mortgages serving as collateral. An increase or decrease in
prepayment rates (resulting primarily from a decrease or increase in mortgage
interest rates) will affect the yield, average life, and price of CMOs. The
prices of certain CMOs, depending on their structure and the rate of
prepayments, can be volatile. Some CMOs may also not be as liquid as other
securities.
 
     REAL ESTATE INVESTMENT TRUSTS ("REITS"). The REITs in which a Series may
invest include equity REITs, which own real estate properties, and mortgage
REITs, which make construction, development and long-term mortgage loans. The
value of an equity REIT may be affected by changes in the value of the
underlying property, while a mortgage REIT may be affected by the quality of the
credit extended. The performance of both types of REITs depends upon conditions
in the real estate industry, management skills and the amount of cash flow. The
risks associated with REITs include defaults by borrowers, self-liquidation,
failure to qualify as a "pass-through" entity under the Federal tax law, failure
to qualify as an exempt entity under the 1940 Act, and the fact that REITs are
not diversified.
 
     PORTFOLIO TURNOVER. To a limited extent, a Series may engage in short-term
transactions if such transactions further its investment objective. A Series may
sell one security and simultaneously purchase another of comparable quality or
simultaneously purchase and sell the same security to take advantage of
short-term differentials in bond yields or otherwise purchase individual
securities in anticipation of relatively short-term price gains. The rate of
portfolio turnover will not be a determining factor in the purchase and sale of
such securities. However, certain tax rules may restrict the Series' ability to
sell securities in some circumstances when the security has been held for less
than three months. Increased portfolio turnover necessarily results in
correspondingly higher costs including brokerage commissions, dealer mark-ups
and other transaction costs on the sale of securities and reinvestment in other
securities, and may result in the acceleration of taxable gains.
 
     REPURCHASE AGREEMENTS AND REVERSE REPURCHASE AGREEMENTS. A Series may
invest in repurchase or reverse repurchase agreements. A repurchase agreement
involves the purchase of a security by a Series and a simultaneous agreement
(generally by a bank or dealer) to repurchase that security from the Series at a
specified price and date or upon demand. This technique offers a method of
earning income on idle cash. The repurchase agreement is effectively secured by
the value of the underlying security. A risk associated with repurchase
agreements is the failure of the seller to repurchase the securities as agreed,
which may cause a Series to suffer a loss if the market value of such securities
declines before they can be liquidated on the open market. In the event of
bankruptcy or insolvency of the seller, a Series may encounter delays and incur
costs in liquidating the underlying security.
 
     When a Series invests in a reverse repurchase agreement, it sells a
portfolio security to another party, such as a bank or a broker-dealer, in
return for cash, and agrees to buy the security back at a future date and price.
Reverse repurchase agreements may be used to provide cash to satisfy unusually
heavy redemption requests or for other temporary or emergency purposes without
the necessity of
 
                                       22
<PAGE>   24
 
selling portfolio securities or to earn additional income on portfolio
securities, such as Treasury bills and notes.
 
     SHORT SALES. Each Series may sell securities "short against the box." While
a short sale is the sale of a security the Series does not own, it is "against
the box" if at all times when the short position is open the Series owns an
equal amount of the securities or securities convertible into, or exchangeable
without further consideration for, securities of the same issue as the
securities sold short.
 
     U.S. GOVERNMENT SECURITIES AND CUSTODIAL RECEIPTS. Obligations issued or
guaranteed as to principal and interest by the U.S. Government, its agencies or
instrumentalities include Treasury bills, notes and bonds and Government
National Mortgage Association ("GNMA") certificates which are supported by the
full faith and credit of the United States; others, such as those of the Federal
Home Loan Banks, are supported by the right of the issuer to borrow from the
Treasury; others, such as those of the Federal National Mortgage Association
("FNMA"), are supported by the discretionary authority of the U.S. Government to
purchase the agency's obligations; and still others, such as those of the
Student Loan Marketing Association, are supported only by the credit of the
instrumentality. No assurance can be given that the U.S. Government will provide
financial support to U.S. Government agencies or instrumentalities in the
future, other than as set forth above, since it is not obligated to do so by
law.
 
     WHEN-ISSUED SECURITIES. A Series may purchase securities on a when-issued,
delayed delivery or forward commitment basis. Actual payment for and delivery of
such securities does not take place until some time in the future -- i.e.,
beyond normal settlement. The Series does not earn interest on such securities
until settlement and bears the risk of market value fluctuations during the
period between the purchase and settlement dates. The series segregate and
maintain at all times cash, cash equivalents, or other high quality liquid debt
securities in an amount at least equal to the amount of outstanding commitments
for when-issued securities.
 
     ZERO COUPON AND PAY-IN-KIND BONDS. A Series may invest up to 10% of its
assets in zero coupon bonds or strips. Zero coupon bonds do not make regular
interest payments; rather, they are sold at a discount from face value.
Principal and accreted discount (representing interest accrued but not paid) are
paid at maturity. Strips are debt securities that are stripped of their interest
after the securities are issued, but otherwise are comparable to zero coupon
bonds. The market value of strips and zero coupon bonds generally fluctuates in
response to changes in interest rates to a greater degree than interest-paying
securities of comparable term and quality. A Series may also purchase
pay-in-kind bonds. Pay-in-kind bonds pay all or a portion of their interest in
the form of debt or equity securities.
 
     Current federal income tax law requires the holder of a zero coupon
security, certain pay-in-kind bonds and certain other securities acquired at a
discount (such as Brady Bonds) to accrue income with respect to these securities
prior to the receipt of cash payments. Accordingly, to avoid liability for
federal income and excise taxes, a Series may be required to distribute income
accrued with respect to these securities and may have to dispose of portfolio
securities under disadvantageous circumstances in order to generate cash to
satisfy these distribution requirements.
 
INVESTMENT RISKS
 
  FOREIGN SECURITIES
 
     Investments in foreign securities, including those of foreign governments,
involve risks that are different in some respects from investments in securities
of U.S. issuers, such as the risk of fluctuations in the value of the currencies
in which they are denominated, a heightened risk of adverse political and
economic developments and, with respect to certain countries, the possibility of
expropriation, nationalization or confiscatory taxation or limitations on the
removal of funds or other assets of a Series. Securities of some foreign issuers
in many cases are less liquid and more volatile than securities of comparable
domestic issuers. There also may be less publicly available information about
foreign issuers than domestic issuers, and foreign issuers generally are not
subject to the uniform accounting, auditing and financial reporting standards,
practices and requirements applicable to domestic issuers. Certain markets may
require payment for securities before delivery. A Series may have limited legal
recourse against the issuer in the event of a default on a debt instrument.
Delays may be encountered in settling securities transactions in certain foreign
markets and a Series will incur costs in converting foreign currencies into U.S.
dollars. Bank custody charges are generally higher for foreign securities. JNL
Global Equities, Salomon Brothers/JNL Global Bond, and T. Rowe Price/JNL
International Equity Investment Series are particularly susceptible to such
risks. ADRs do not involve the same direct currency and liquidity risks as
foreign securities.
 
     The considerations noted above may be intensified in the case of
investments in developing countries or countries with limited or developing
capital markets. In particular, developing countries may have relatively
unstable governments, economies based on only a few industries, and securities
markets that trade a small number of securities. Securities of issuers located
in developing
 
                                       23
<PAGE>   25
 
countries may have limited marketability and may be subject to more abrupt or
erratic price fluctuations.
 
     At times, securities held by a Series may be listed on foreign exchanges or
traded in foreign markets which are open on days (such as Saturday) when a
Series does not compute its price or accept orders for the purchase, redemption
or exchange of its shares. As a result, the net asset value of a Series may be
significantly affected by trading on days when shareholders cannot make
transactions.
 
     The share price of a Series that invests in foreign securities will reflect
the movements of both the prices of the portfolio securities and the currencies
in which such securities are denominated. A Series' foreign investments may
cause changes in a Series' share price that have a low correlation with movement
in the U.S. markets. Because most of the foreign securities in which a Series
invests will be denominated in foreign currencies, or otherwise will have values
that depend on the performance of foreign currencies relative to the U.S.
dollar, the relative strength of the U.S. dollar may be an important factor in
the performance of a Series, depending on the extent of the Series' foreign
investments.
 
     A Series may employ certain strategies in order to manage exchange rate
risks. For example, a Series may hedge some or all of its investments
denominated in a foreign currency against a decline in the value of that
currency. A Series may enter into contracts to sell that foreign currency for U.
S. dollars (not exceeding the value of a Series' assets denominated in that
currency) or by participating in options or futures contracts with respect to
such currency ("position hedge"). A Series could also hedge that position by
selling a second currency, which is expected to perform similarly to the
currency in which portfolio investments are denominated, for U.S. dollars
("proxy hedge"). A Series may also enter into a forward contract to sell the
currency in which the security is denominated for a second currency that is
expected to perform better relative to the U.S. dollar if the sub-adviser
believes there is a reasonable degree of correlation between movements in the
two currencies ("cross hedge"). In addition, when a Series anticipates
purchasing securities denominated in a particular currency, the Series may enter
into a forward contract to purchase or sell such currency in exchange for the
dollar or another currency ("anticipatory hedge").
 
     These strategies minimize the effect of currency appreciation as well as
depreciation, but do not protect against a decline in the underlying value of
the hedged security. In addition, such strategies may reduce or eliminate the
opportunity to profit from increases in the value of the original currency and
may adversely impact a Series' performance if the sub-adviser's projection of
future exchange rates is inaccurate.
 
  FUTURES, OPTIONS AND OTHER DERIVATIVE INSTRUMENTS
 
     The use of futures, options, forward contracts, and swaps ("derivative
instruments") exposes a Series to additional investment risks and transaction
costs. If a sub-adviser seeks to protect a Series against potential adverse
movements in the securities, foreign currency or interest rate markets using
these instruments, and such markets do not move in a direction adverse to the
Series, that Series could be left in a less favorable position than if such
strategies had not been used. Risks inherent in the use of futures, options,
forward contracts and swaps include (1) the risk that interest rates, securities
prices and currency markets will not move in the directions anticipated; (2)
imperfect correlation between the price of derivative instruments and movements
in the prices of the securities, interest rates or currencies being hedged; (3)
the fact that skills needed to use these strategies are different from those
needed to select portfolio securities; (4) the possible absence of a liquid
secondary market for any particular instrument at any time; and (5) the possible
need to defer closing out certain hedged positions to avoid adverse tax
consequences.
 
  HIGH YIELD/HIGH RISK BONDS
 
     Lower rated bonds involve a higher degree of credit risk, which is the risk
that the issuer will not make interest or principal payments when due. In the
event of an unanticipated default, a Series would experience a reduction in its
income, and could expect a decline in the market value of the securities so
affected. More careful analysis of the financial condition of issuers of lower
rated securities is therefore necessary. During an economic downturn or
substantial period of rising interest rates, highly leveraged issuers may
experience financial stress which could adversely affect their ability to
service principal and interest payment obligations, to meet projected business
goals and to obtain additional financing.
 
     The market prices of lower rated securities are generally less sensitive to
interest rate changes than higher rated investments, but more sensitive to
adverse economic or political changes, or individual developments specific to
the issuer. Periods of economic or political uncertainty and change can be
expected to result in volatility of prices of these securities. Since the last
major economic recession, there has been a substantial increase in the use of
high-yield debt securities to fund highly leveraged corporate acquisitions and
restructurings, so past experience with high-yield securities in a prolonged
economic downturn may not provide an accurate indication of future
 
                                       24
<PAGE>   26
 
performance during such periods. Lower rated securities also may have less
liquid markets than higher rated securities, and their liquidity as well as
their value may be more severely affected by adverse economic conditions. Many
high-yield bonds do not trade frequently. When they do trade, their price may be
substantially higher or lower than had been expected. A lack of liquidity also
means that judgment may play a bigger role in valuing the securities. Adverse
publicity and investor perceptions as well as new or proposed laws may also have
a greater negative impact on the market for lower rated bonds.
 
     A Series may also invest in unrated debt securities of foreign and domestic
issuers. Unrated debt, while not necessarily of lower quality than rated
securities, may not have as broad a market. Sovereign debt of foreign
governments is generally rated by country, because these ratings do not take
into account individual factors relevant to each issue and may not be updated
regularly. Because of the size and perceived demand of the issue, among other
factors, certain municipalities may not incur the costs of obtaining a rating.
The sub-adviser will analyze the credit-worthiness of the issuer, as well as any
financial institution or other party responsible for payments on the security,
in determining whether to purchase unrated municipal bonds. See Appendix A for a
description of bond rating categories.
 
  HYBRID INSTRUMENTS
 
     The risks of investing in hybrid instruments reflect a combination of the
risks of investing in securities, options, futures and currencies, including
volatility and lack of liquidity. Reference is made to the discussion of
futures, options, and forward contracts herein for a discussion of these risks.
Further, the prices of the hybrid instrument and the related commodity or
currency may not move in the same direction or at the same time. Hybrid
instruments may bear interest or pay preferred dividends at below market (or
even relatively nominal) rates. Alternatively, hybrid instruments may bear
interest at above market rates but bear an increased risk of principal loss. In
addition, because the purchase and sale of hybrid instruments could take place
in an over-the-counter or in a private transaction between the Series and the
seller of the hybrid instrument, the creditworthiness of the counter-party to
the transaction would be a risk factor which the Series would have to consider.
Hybrid instruments also may not be subject to regulation of the CFTC, which
generally regulates the trading of commodity futures by U.S. persons, the SEC,
which regulates the offer and sale of securities by and to U.S. persons, or any
other governmental regulatory authority.
 
  MUNICIPAL OBLIGATIONS
 
     In addition to the usual risks associated with income investing, the value
of municipal obligations can be affected by changes in the actual or perceived
credit quality of municipal obligations held by a Series. The credit quality of
a municipal obligation can be affected by, among other factors, the financial
condition of the issuer or guarantor, the issuer's future borrowing plans and
sources of revenue, the economic feasibility of the revenue bond project or
general borrowing purpose, political or economic developments in the region
where the security is issued, and the liquidity of the security. Because
municipal obligations are generally traded over-the-counter, the liquidity of a
particular issue often depends on the willingness of dealers to make a market in
the security. The liquidity of some municipal issues may be enhanced by demand
features, which enable a Series to demand payment on short notice from the
issuer or a financial intermediary.
 
  WHEN-ISSUED SECURITIES
 
     The price of such securities, which may be expressed in yield terms, is
fixed at the time the commitment to purchase is made, but delivery and payment
take place at a later date. Normally, the settlement date occurs within 90 days
of the purchase for when-issued securities, but may be substantially longer for
forward commitments. During the period between purchase and settlement, no
payment is made by the Series to the issuer and no interest accrues to the
Series. The purchase of these securities will result in a loss if their value
declines prior to the settlement date. This could occur, for example, if
interest rates increase prior to settlement. The longer the period between
purchase and settlement, the greater the risks. At the time the Series makes the
commitment to purchase these securities, it will record the transaction and
reflect the value of the security in determining its net asset value. The Series
will segregate for these securities by maintaining cash and/or liquid,
high-grade debt securities with its custodian bank equal in value to commitments
for them during the time between the purchase and the settlement. Therefore, the
longer this period, the longer the period during which alternative investment
options are not available to the Series (to the extent of the securities used
for cover). Such securities either will mature or, if necessary, be sold on or
before the settlement date.
 
                                       25
<PAGE>   27
 
- --------------------------------------------------------------------------------
                            MANAGEMENT OF THE TRUST
- --------------------------------------------------------------------------------
 
INVESTMENT ADVISER
 
     Under Massachusetts law and the Trust's Declaration of Trust and By-Laws,
the management of the business and affairs of the Trust is the responsibility of
the Trustees.
 
     JNFSI, 5901 Executive Drive, Lansing, Michigan 48911, is the investment
adviser of each Series and provides each Series with professional investment
supervision and management. JNFSI is a wholly owned subsidiary of Jackson
National Life Insurance Company, which is in turn wholly owned by Prudential
Corporation plc, the largest life insurance company in the United Kingdom. JNFSI
provides accounting services, preparation of financial statements, tax services,
and regulatory reports to the Trust.
 
     In addition to providing the services described above, JNFSI selects,
contracts with and compensates sub-advisers to manage the investment and
reinvestment of the assets of the Series of the Trust. JNFSI monitors the
compliance of such sub-advisers with the investment objectives and related
policies of each Series and reviews the performance of such sub-advisers and
reports periodically on such performance to the Trustees of the Trust.
 
     As compensation for its services, JNFSI receives a fee from the Trust
computed separately for each Series. The fee for each Series is stated as an
annual percentage of the current value of the net assets of the Series. The
fees, which are accrued daily and payable monthly, are calculated on the basis
of the average of all valuations of net assets of each Series made at the close
of business on each business day of the Trust during the period for which such
fees are paid through the date of calculation. Once the average net assets of a
Series exceed specified amounts, the fee is reduced with respect to such excess.
The following is a schedule of the fees each Series currently is obligated to
pay JNFSI.
 
<TABLE>
<CAPTION>
                                                                $0 TO    $50 TO    $150 TO    $300 TO     OVER
                      (*M -- MILLION)                           $50 M    $150 M    $300 M     $500 M     $500 M
                      ---------------                           -----    ------    -------    -------    ------
<S>                                                             <C>      <C>       <C>        <C>        <C>
JNL Aggressive Growth Series................................     .95%     .95%       .90%       .85%      .85%
JNL Capital Growth Series...................................     .95%     .95%       .90%       .85%      .85%
JNL Global Equities Series..................................    1.00%    1.00%       .95%       .90%      .90%
JNL/Alger Growth Series.....................................    .975%    .975%      .975%       .95%      .90%
PPM America/JNL High Yield Bond Series......................     .75%     .70%      .675%       .65%     .625%
PPM America/JNL Money Market Series.........................     .60%     .60%      .575%       .55%     .525%
Salomon Brothers/JNL Global Bond Series.....................     .85%     .85%       .80%       .80%      .75%
Salomon Brothers/JNL U.S. Government & Quality Bond
  Series....................................................     .70%     .70%       .65%       .60%      .55%
T. Rowe Price/JNL Established Growth Series.................     .85%     .85%       .80%       .80%      .80%
T. Rowe Price/JNL International Equity Investment Series....    1.10%    1.05%      1.00%       .95%      .90%
T. Rowe Price/JNL Mid-Cap Growth Series.....................     .95%     .95%       .90%       .90%      .90%
</TABLE>
 
INVESTMENT SUB-ADVISERS
 
     The organizations described below act as sub-advisers to the Trust and
certain of its Series pursuant to Sub-Advisory Agreements with JNFSI. Under the
Sub-Advisory Agreements, the sub-advisers manage the investment and reinvestment
of the assets of the respective Series for which they are responsible. Each of
the sub-advisers discharges its responsibilities subject to the policies of the
Trustees and the oversight and supervision of JNFSI, which pays the
sub-advisers' fees.
 
     Fred Alger Management, Inc., ("Alger Management") which is located at 75
Maiden Lane, New York, New York 10038, serves as sub-adviser to the JNL/Alger
Growth Series. Alger Management is generally engaged in the business of
rendering investment advisory services to institutions and, to a lesser extent,
individuals. Alger Management has been engaged in the business of rendering
investment advisory services since 1964 and, as of June 30, 1995, had   
approximately $3.8 billion under management, $2.0 billion in mutual fund
accounts and $1.8 billion in other advisory accounts. Alger Management is a
wholly owned subsidiary of Alger Inc. which in turn is a wholly owned
subsidiary of Alger Associates, Inc., a financial services holding company.
Fred M. Alger III and his brother, David D. Alger, own approximately 53 percent
and 17 percent, respectively, of Alger Associates, Inc. and may be deemed to
control that company and its subsidiaries.
 
     Janus Capital Corporation ("Janus Capital"), a Colorado corporation with
principal offices at 100 Fillmore Street, Denver, Colorado 80206, serves as
sub-adviser to the JNL Capital Growth Series, JNL Aggressive Growth
 
                                       26
<PAGE>   28
 
Series and JNL Global Equities Series. Janus Capital is an investment adviser
with more than $39 billion in assets under management. Kansas City Southern
Industries, Inc. ("KCSI") owns approximately 83% of the outstanding voting stock
of Janus Capital, most of which it acquired in 1984. KCSI is a publicly-traded
holding company whose primary subsidiaries are engaged in transportation and
financial services. Thomas H. Bailey, President and Chairman of the Board of
Janus Capital, owns approximately 12% of its voting stock and, by agreement with
KCSI, selects a majority of Janus Capital's Board.
 
     PPM America, Inc. ("PPM"), which is located at 225 West Wacker Drive,
Chicago, Illinois 60606, serves as sub-adviser to the PPM America/JNL Money
Market Series and the PPM America/JNL High Yield Bond Series. PPM, an affiliate
of JNFSI, is a wholly owned subsidiary of Prudential Portfolio Managers Ltd.,
("PPM Ltd.") an investment management company engaged in global money
management, which is in turn wholly owned by Prudential Corporation plc. PPM
Ltd. and its subsidiaries manage over $120 billion in various currencies and
markets. PPM currently manages over $24 billion of Jackson National Life
Insurance Company assets. Additionally, PPM manages assets of over $4.2 billion
for other affiliated companies and over $900 million for non-affiliated
entities.
 
     Rowe Price-Fleming International, Inc. ("Price-Fleming"), located at 100
East Pratt Street, Baltimore, Maryland 21202, serves as sub-adviser to the T.
Rowe Price/JNL International Equity Investment Series. Price-Fleming was founded
in 1979 as a joint venture between T. Rowe Price Associates, Inc. and Robert
Fleming Holdings Limited. Price-Fleming is one of America's largest
international mutual fund asset managers with approximately $18 billion under
management in its offices in Baltimore, London, Tokyo, and Hong Kong.
 
     Salomon Brothers Asset Management Inc ("Salomon Brothers") serves as
sub-adviser to the Salomon Brothers/JNL Global Bond Series and the Salomon
Brothers/JNL U.S. Government & Quality Bond Series. Salomon Brothers is an
indirect, wholly owned subsidiary of Salomon Brothers Holding Company Inc.
incorporated in 1987, and an affiliate of Salomon Brothers Inc. The business
address of Salomon Brothers is 7 World Trade Center, New York, New York 10048.
Through its office in New York and affiliates in London, Frankfurt, Tokyo and
Hong Kong, Salomon Brothers provides a broad range of fixed income and equity
investment advisory services for its individual and institutional clients
located throughout the world, including European and Far East central banks,
pension funds, endowments, insurance companies, and various investment companies
(including portfolios thereof). As of January 1, 1996, Salomon Brothers had
investment advisory responsibility for more than $14 billion of assets. Salomon
Brothers has access to Salomon Brothers Inc's more than 250 economists,
mortgage, bond, sovereign and equity analysts.
 
     In connection with Salomon Brothers' service as sub-adviser to the Salomon
Brothers/JNL Global Bond Series, SBAM Limited, whose business address is
Victoria Plaza, 111 Buckingham Palace Road, London SW1W OSB, England, provides
certain sub-advisory services to Salomon Brothers relating to currency
transactions and investments in non-dollar denominated debt securities for the
benefit of the Series. SBAM Limited is compensated by Salomon Brothers at no
additional expense to the Trust. Like Salomon Brothers, SBAM Limited is a
direct, wholly-owned subsidiary of Salomon Brothers Holding Company Inc. SBAM
Limited is a member of the Investment Management Regulatory Organization Limited
in the United Kingdom and is registered as an investment adviser in the United
States pursuant to the Investment Advisers Act of 1940, as amended.
 
     T. Rowe Price Associates, Inc. ("T. Rowe"), located at 100 East Pratt
Street, Baltimore, Maryland 21202, serves as sub-adviser to the T. Rowe
Price/JNL Established Growth Series and the T. Rowe Price/JNL Mid-Cap Growth
Series. T. Rowe was founded in 1937 by the late Thomas Rowe Price, Jr. T. Rowe
and its affiliates manage over $60 billion for approximately three million
individual and institutional investor accounts, including limited and real
estate partnerships and other mutual funds.
 
PORTFOLIO MANAGEMENT
 
     The following individuals are primarily responsible for the day-to-day
management of the particular Series as indicated below.
 
JNL GLOBAL EQUITIES SERIES
 
     Helen Young Hayes is responsible for the day-to-day management of the JNL
Global Equities Series. Ms. Hayes joined Janus Capital in 1987. She holds a
Bachelor of Arts in Economics from Yale University and is a Chartered Financial
Analyst.
 
JNL CAPITAL GROWTH SERIES
 
     James P. Goff is responsible for the day-to-day management of the JNL
Capital Growth Series. Mr. Goff joined Janus Capital in 1988. He holds a
Bachelor of Arts in Economics from Yale University and is a Chartered Financial
Analyst.
 
                                       27
<PAGE>   29
 
JNL AGGRESSIVE GROWTH SERIES
 
     Warren B. Lammert is responsible for the day-to-day management of the JNL
Aggressive Growth Series. Mr. Lammert joined Janus Capital in 1987. He holds a
Bachelor of Arts in Economics from Yale University and a Master of Science in
Economic History from the London School of Economics. He is a Chartered
Financial Analyst.
 
JNL/ALGER GROWTH SERIES
 
     David D. Alger, President and Chief Investment Officer of Alger
Management, is primarily responsible for the day-to-day management of the
JNL/Alger Growth Series. He has been employed by Alger Management as Executive
Vice President and Director of Research since 1971 and he serves as portfolio
manager for other mutual funds and investment accounts managed by Alger
Management. Also participating in the management of the Series are Ronald
Tartaro and Seilai Khoo. Mr. Tartaro has been employed by Alger Management
since 1990 and he serves as a senior research analyst. Prior to 1990, he was a
member of the technical staff at AT&T Bell Laboratories. Ms. Khoo has been
employed by Alger Management since 1989 and she serves as a senior research
analyst.
 
PPM AMERICA/JNL MONEY MARKET SERIES
 
PPM AMERICA/JNL HIGH YIELD BOND SERIES
 
     In its capacity as sub-adviser, PPM supervises and manages the investment
portfolios of the PPM America/ JNL Money Market Series and the PPM America/JNL
High Yield Bond Series and directs the purchase and sale of each Series'
investment securities. PPM utilizes teams of investment professionals acting
together to manage the assets of the Series. The teams meet regularly to review
portfolio holdings and to discuss purchase and sale activity. The teams adjust
holdings in the portfolios as they deem appropriate in the pursuit of the
Series' investment objectives.
 
SALOMON BROTHERS/JNL GLOBAL BOND SERIES
 
SALOMON BROTHERS/JNL U.S. GOVERNMENT & QUALITY BOND SERIES
 
     Steven Guterman is primarily responsible for the day-to-day management of
the Salomon Brothers/JNL U.S. Government & Quality Bond Series and the mortgage-
backed securities and U.S. Government securities portions of the Salomon
Brothers/JNL Global Bond Series. Mr. Guterman co-manages the Salomon
Brothers/JNL U.S. Government & Quality Bond Series with Roger Lavan. Peter J.
Wilby is primarily responsible for the day-to-day management of the high yield
and emerging market debt securities portions of the Salomon Brothers/JNL Global
Bond Series. Beth Semmel assists Mr. Wilby in the day-to-day management of the
Salomon Brothers/JNL Global Bond Series.
 
     Mr. Guterman joined Salomon Brothers in 1990 and is currently a Senior
Portfolio Manager, responsible for Salomon Brothers' investment company and
institutional portfolios which invest primarily in mortgage-backed securities
and U.S. Government issues. Mr. Guterman joined Salomon Brothers Inc in 1983. He
initially worked in the mortgage research group where he became a Research
Director and later traded derivative mortgage-backed securities for Salomon
Brothers Inc. Mr. Lavan joined Salomon Brothers in 1990 and is a Portfolio
Manager and Quantitative Analyst. Prior to joining Salomon Brothers, Mr. Lavan
spent four years analyzing portfolios for Salomon Brothers Inc's Fixed Income
Sales Group and Product Support Divisions. Mr. Wilby, who joined Salomon
Brothers in 1989, is a Senior Portfolio Manager, responsible for Salomon
Brothers' investment company and institutional portfolios which invest in high
yield non-U.S. and U.S. corporate debt securities and high yield foreign
sovereign debt securities. Mr. Wilby was previously employed by Prudential
Capital Management Group ("Prudential") where he served as director of
Prudential's credit research unit and as a corporate and sovereign credit
analyst with Prudential. Mr. Wilby later managed high yield bonds and leveraged
equities in the mutual funds and institutional portfolios at Prudential. Ms.
Semmel joined Salomon Brothers in May of 1993. Prior to joining Salomon
Brothers, Ms. Semmel spent four years as a high yield bond analyst at Morgan
Stanley Asset Management.
 
     David J. Scott is primarily responsible for a portion of the Salomon
Brothers/JNL Global Bond Series relating to currency transactions and
investments in non-dollar denominated debt securities. Prior to joining SBAM
Limited in April, 1994, Mr. Scott worked for four years at JP Morgan Investment
Management where he was responsible for global and non-dollar portfolios. Before
joining JP Morgan Investment Management, Mr. Scott worked for three years at
Mercury Asset Management where he was responsible for captive insurance
portfolios and products.
 
T. ROWE PRICE/JNL ESTABLISHED GROWTH SERIES
 
     T. Rowe Price/JNL Established Growth Series has an Investment Advisory
Committee composed of the following members: John D. Gillespie, Chairman, James
A.C. Kennedy and Brian C. Rogers. The Committee Chairman has day-to-day
responsibility for managing the Series and works with the Committee in
developing
 
                                       28
<PAGE>   30
 
and executing the Series' investment program. Mr. Gillespie joined T. Rowe in
1986 and has been managing investments since 1989.
 
T. ROWE PRICE/JNL INTERNATIONAL EQUITY INVESTMENT SERIES
 
     The T. Rowe Price/JNL International Equity Investment Series has an
investment advisory group that has day-to-day responsibility for managing the
Series and developing and executing the Series' investment program. The Series'
advisory group is composed of the following members: Martin G. Wade, Christopher
D. Alderson, Peter B. Askew, Richard J. Bruce, Mark J.T. Edward, John R. Ford,
Robert C. Howe, James B.M. Seddon, Benedict R.F. Thomas, and David J.J. Warren.
 
     Martin Wade joined Price-Fleming in 1979 and has 25 years of experience
with the Fleming Group in research, client service, and investment management.
(Fleming Group includes Robert Fleming and/or Jardine Fleming Group Limited).
Christopher Alderson joined Price-Fleming in 1988 and has eight years of
experience with the Fleming Group in research and portfolio management. Peter
Askew joined Price-Fleming in 1988 and has 19 years of experience managing
multi-currency fixed income portfolios. Richard Bruce joined Price-Fleming in
1991 and has six years of experience in investment management with the Fleming
Group in Tokyo. Mark Edwards joined Price-Fleming in 1986 and has 13 years of
experience in financial analysis. John Ford joined Price-Fleming in 1982 and has
14 years of experience with the Fleming Group in research and portfolio
management. Robert Howe joined Price-Fleming in 1986 and has 13 years of
experience in economic research, company research and portfolio management.
James Seddon joined Price-Fleming in 1987 and has seven years of experience in
investment management. Benedict Thomas joined Price-Fleming in 1988 and has five
years of portfolio management experience. David Warren joined Price-Fleming in
1984 and has 14 years of experience in equity research, fixed income research
and portfolio management.
 
T. ROWE PRICE/JNL MID-CAP GROWTH SERIES
 
     The T. Rowe Price/JNL Mid-Cap Growth Series has an Investment Advisory
Committee composed of the following members: Brian W. Berghuis, Chairman, James
A.C. Kennedy, and John F. Wakeman. The Committee Chairman has day to day
responsibility for managing the Series and works with the Committee in
developing and executing the Series' investment program. Mr. Berghuis has been
managing investments since joining T. Rowe in 1985.
 
SUB-ADVISORY ARRANGEMENTS
 
     Under the terms of each of the Sub-Advisory Agreements, the sub-adviser
manages the investment and reinvestment of the assets of the assigned Series,
subject to the supervision of the Trustees of the Trust. The sub-adviser
formulates a continuous investment program for each such Series consistent with
its investment objectives and policies outlined in this Prospectus. Each
sub-adviser implements such programs by purchases and sales of securities and
regularly reports to JNFSI and the Trustees of the Trust with respect to the
implementation of such programs.
 
     As compensation for their services, the sub-advisers receive fees from
JNFSI computed separately for each Series. The fee for each Series is stated as
an annual percentage of the current value of the net assets of such Series. The
fees are calculated on the basis of the average of all valuations of net assets
of each Series made at the close of business on each business day of the Trust
during the period for which such fees are paid through the date of calculation.
Once the average net assets of a Series exceed specified amounts, the fee is
reduced with respect to such excess. The following is a schedule of the
management fees JNFSI currently is obligated to pay the sub-advisers out of the
advisory fee it receives from each Series as specified above:
 
                                       29
<PAGE>   31
 
<TABLE>
<CAPTION>
                                                           $0 TO    $50 TO    $100 TO    $150 TO    $300 TO     OVER
                    (*M - MILLION)                         $50 M    $100 M    $150 M     $300 M     $500 M     $500 M
                    --------------                         -----    ------    -------    -------    -------    ------
<S>                                                        <C>      <C>       <C>        <C>        <C>        <C>
JNL Aggressive Growth Series*..........................     .55%      .55%       .50%       .50%      .50%       .45%
JNL Capital Growth Series*.............................     .55%      .55%       .50%       .50%      .50%       .45%
JNL Global Equities Series*............................     .55%      .55%       .50%       .50%      .50%       .45%
JNL/Alger Growth Series................................     .55%      .55%       .55%       .55%      .50%       .45%
PPM America/JNL High Yield Bond Series.................     .25%      .20%       .20%      .175%      .15%      .125%
PPM America/JNL Money Market Series....................     .20%      .15%       .15%      .125%      .10%      .075%
Salomon Brothers/JNL Global Bond Series................    .375%      .35%       .35%       .30%      .30%       .25%
Salomon Brothers/JNL U.S. Government & Quality Bond
  Series...............................................    .225%     .225%      .225%      .175%      .15%       .10%
</TABLE>
 
<TABLE>
<CAPTION>
                                                                $0 TO    $20 TO    $50 TO
                                                                $20 M    $50 M     $200 M    $200 M+
                                                                -----    ------    ------    -------
<S>                                                             <C>      <C>       <C>       <C>
T. Rowe Price/JNL Established Growth Series.................     .45%      .40%     .40%**     .40%
T. Rowe Price/JNL International Equity Investment Series....     .75%      .60%     .50%       .50%**
T. Rowe Price/JNL Mid-Cap Growth Series.....................     .60%      .50%     .50%**     .50%
</TABLE>
 
 * Prior to September 16, 1996, the sub-advisory fees payable to Janus for these
   Series were: $0 to $50 million -- .60%; $50 to $150 million -- .55%; $150 to
   $300 million -- .45%; $300 to $500 million -- .40%; over $500 million --
   .40%.
 
** When average assets exceed this amount, the sub-advisory fee asterisked is
   applicable to all amounts in this Series.
 
     With respect to the Salomon Brothers/JNL Global Bond Series and in
connection with the advisory consulting agreement between Salomon Brothers and
SBAM Limited, Salomon Brothers will pay SBAM Limited, as full compensation for
all services provided under the advisory consulting agreement, a portion of its
investment management fee. The amount payable to SBAM Limited will be equal to
the fee payable under Salomon Brothers' sub-advisory agreement multiplied by the
portion of the assets of the Series that SBAM Limited has been delegated to
manage divided by the current value of the net assets of the Series.
 
OTHER TRUST EXPENSES
 
     In addition to the investment advisory fee, the Trust incurs expenses,
including legal, auditing and accounting expenses, Trustees' fees and expenses,
insurance premiums, brokers' commissions, taxes and governmental fees, expenses
of issue or redemption of shares, expenses of registering or qualifying shares
for sale, reports and notices to shareholders, and fees and disbursements of
custodians, transfer agents, registrars, shareholder servicing agents and
dividend disbursing agents, and certain expenses with respect to membership fees
of industry associations.
 
                                       30
<PAGE>   32
 
- --------------------------------------------------------------------------------
                           INVESTMENT IN TRUST SHARES
- --------------------------------------------------------------------------------
 
     An insurance company purchases the shares of the Series at their net asset
value using premiums received on Policies issued by Accounts. These Accounts are
funded by shares of the Trust. There is no sales charge. All shares are sold at
net asset value.
 
     The net asset value per share of each Series is determined at the close of
regular trading on the New York Stock Exchange (normally 4:00 p.m., Eastern
time) each day that the New York Stock Exchange is open. The net asset value per
share is calculated by adding the value of all securities and other assets of a
Series, deducting its liabilities, and dividing by the number of shares
outstanding.
 
     Shares of the Trust are currently sold primarily to separate accounts of
Jackson National Life Insurance Company, 5901 Executive Drive, Lansing, Michigan
48911 to fund the benefits under variable insurance or annuity Policies.
Further, it is anticipated that shares of the Trust will be sold to certain
qualified retirement plans.
 
     All investments in the Trust are credited to the shareholder's account in
the form of full and fractional shares of the designated Series (rounded to the
nearest 1/1000 of a share). The Trust does not issue share certificates.
 
- --------------------------------------------------------------------------------
                                SHARE REDEMPTION
- --------------------------------------------------------------------------------
 
     An insurance company separate account redeems shares to make benefit or
surrender payments under the terms of its Policies. Redemptions are processed on
any day on which the Trust is open for business and are effected at net asset
value next determined after the redemption order, in proper form, is received by
the Trust's transfer agent.
 
     The Trust may suspend the right of redemption only under the following
unusual circumstances:
 
     - when the New York Stock Exchange is closed (other than weekends and
       holidays) or trading is restricted;
 
     - when an emergency exists, making disposal of portfolio securities or the
       valuation of net assets not reasonably practicable; or
 
     - during any period when the SEC has by order permitted a suspension of
       redemption for the protection of shareholders.
 
- --------------------------------------------------------------------------------
                             ADDITIONAL INFORMATION
- --------------------------------------------------------------------------------
 
     DESCRIPTION OF SHARES -- The Declaration of Trust permits the Trustees to
issue an unlimited number of full and fractional shares of beneficial interest
of each Series and to divide or combine such shares into a greater or lesser
number of shares without thereby changing the proportionate beneficial interests
in the Trust. Each share of a Series represents an equal proportional interest
in that Series with each other share. The Trust reserves the right to create a
number of different Series. In that case, the shares of each Series would
participate equally in the earnings, dividends, and assets of the particular
Series. Upon liquidation of a Series, its shareholders are entitled to share pro
rata in the net assets of such Series available for distribution to
shareholders.
 
     As of August 31, 1996, Jackson National Life Insurance Company owned 33.12%
of the outstanding shares of the Trust.
 
     SERIES TRANSACTIONS -- The Trust's portfolio transactions are executed
through brokers who are considered by the appropriate sub-adviser as able to
provide execution at the most favorable prices and in the most effective manner.
Portfolio security transactions may be executed through brokers who are
affiliated with the Trust, JNFSI or a sub-adviser. In addition, brokers may be
selected taking into account such brokers' assistance in the purchase of
variable annuity contracts funded by the Trust (although such assistance or
absence thereof is neither a qualifying nor a disqualifying factor in such
selection). See the Statement of Additional Information for more detailed
information.
 
     VOTING RIGHTS -- Except for matters affecting a particular Series, as
described below, all shares of the Trust have equal voting rights and may be
voted in the election of Trustees and on other matters submitted to the vote of
the shareholders. Shareholders' meetings ordinarily
 
                                       31
<PAGE>   33
 
will not be held unless required by the 1940 Act. As permitted by Massachusetts
law, there normally will be no shareholders' meetings for the purpose of
electing Trustees unless and until such time as fewer than a majority of the
Trustees holding office have been elected by shareholders. At that time, the
Trustees then in office will call a shareholders' meeting for the election of
Trustees. The Trustees must call a meeting of shareholders for the purpose of
voting upon the removal of any Trustee when requested to do so by the record
holders of 10% of the outstanding shares of the Trust. A Trustee may be removed
after the holders of record of not less than two-thirds of the outstanding
shares have declared that the Trustee be removed either by declaration in
writing or by votes cast in person or by proxy. Except as set forth above, the
Trustees shall continue to hold office and may appoint successor Trustees,
provided that immediately after the appointment of any successor Trustee, at
least two-thirds of the Trustees have been elected by the shareholders. Shares
do not have cumulative voting rights. Thus, holders of a majority of the shares
voting for the election of Trustees can elect all the Trustees. No amendment may
be made to the Declaration of Trust without the affirmative vote of a majority
of the outstanding shares of the Trust, except that amendments to conform the
Declaration to the requirements of applicable federal laws or regulations or the
regulated investment company provisions of the Code may be made by the Trustees
without the vote or consent of shareholders. If not terminated by the vote or
written consent of a majority of its outstanding shares, the Trust will continue
indefinitely.
 
     In matters affecting only a particular Series, the matter shall have been
effectively acted upon by a majority vote of that Series even though: (1) the
matter has not been approved by a majority vote of any other Series; or (2) the
matter has not been approved by a majority vote of the Trust.
 
     Shareholders of a Massachusetts business trust may, under certain
circumstances, be held personally liable as partners for the obligations of the
Trust. The risk of a shareholder incurring any financial loss on account of
shareholder liability is limited to circumstances in which the Trust itself
would be unable to meet its obligations. The Declaration of Trust contains an
express disclaimer of shareholder liability for acts or obligations of the Trust
and provides that notice of the disclaimer must be given in each agreement,
obligation or instrument entered into or executed by the Trust or Trustees. The
Declaration of Trust provides for indemnification of any shareholder held
personally liable for the obligations of the Trust and also provides for the
Trust to reimburse the shareholder for all legal and other expenses reasonably
incurred in connection with any such claim or liability.
 
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                     PERFORMANCE ADVERTISING FOR THE SERIES
- --------------------------------------------------------------------------------
 
     The Trust may from time to time advertise several types of historical
performance for the Series. The performance advertised will be based on
historical results and is not intended to indicate future performance. The
performance figures advertised for a Series may or may not reflect the effect of
any charges that are imposed under a variable annuity or variable life contract
that is funded by the Trust. Such charges, described in the variable annuity or
variable life prospectus, will have the effect of reducing the performance
described below.
 
     Each Series may advertise standardized average annual total return,
calculated in a manner prescribed by the Securities and Exchange Commission, and
non-standardized total return. Standardized average annual total return will
show the percentage rate of return of a hypothetical initial investment of
$1,000 for the most recent one, five and ten year periods, or for a period
covering the time the Series has been in existence if the Series has not been in
existence for one of the prescribed periods. Because average annual total
returns tend to smooth out variations in the Series' returns, you should
recognize that they are not the same as actual year-by-year results. Non-
standardized total return may be for periods other than those required to be
presented or may otherwise differ from standardized average annual total return.
 
     Each Series may also advertise yield, and the PPM America/JNL Money Market
Series may also advertise effective yield. Yield, as calculated by each Series
other than the PPM America/JNL Money Market Series, refers to the annualized
income generated by an investment in the Series over a specified thirty-day
period. The yield is calculated by assuming that the income generated by the
investment during that thirty-day period is generated each thirty-day period
over a twelve-month period and is shown as a percentage of the investment.
Yield, as calculated by the PPM America/JNL Money Market Series, is a measure of
the net dividend and interest income earned over a specific seven-day period
expressed as a percentage of the offering price of the Series. The yield is an
annualized figure, which means that it is assumed that the Series generates the
same level of net income over a 52-week period. Effective yield is calculated
under rules prescribed by the Securities and Exchange Commission and assumes a
weekly reinvestment of income earned. The effective
 
                                       32
<PAGE>   34
 
yield will be slightly higher than the yield due to this compounding effect.
Because yield accounting methods differ from the methods used for financial
reporting and tax accounting purposes, a Series' yield may not equal its
distribution rate, the income paid to a shareholder's account, or the income
reported in the Series' financial statements.
 
     The performance of the Series may be compared to the performance of other
mutual funds or mutual fund indices with similar objectives and policies as
reported by Lipper Analytical Services, Inc. ("Lipper"), CDA Investment
Technologies, Inc. ("CDA") or Donoghue's Money Fund Report. Lipper and CDA
performance calculations are based upon changes in net asset value with all
dividends reinvested and do not include the effect of any sales charges. The
Series' performance may also be compared to that of the Consumer Price Index or
various unmanaged stock and bond indices including, but not limited to, Salomon
Brothers Broad Investment Grade Index, Lehman Brothers High Yield Index, Lehman
Brothers Aggregate Bond Index, Salomon Brothers Treasury Index, S&P Mid-Cap 400
Index, Morgan Stanley Capital International World Index, Morgan Stanley Europe
and Austral-asia, Far East Equity Index, Russell 2000 Index, and S&P 500
Composite Stock Price Index.
 
     From time to time, a Series also may quote information from publications
including, but not limited to, the following: Morningstar, Inc., The Wall Street
Journal, Money Magazine, Forbes, Barron's, The New York Times, USA Today,
Institutional Investor and Registered Representative. Also, investors may want
to compare the historical returns of various investments, performance indices of
those investments or economic indicators, including but not limited to stocks,
bonds, certificates of deposit and other bank products, money market funds and
U.S. Treasury obligations. Certain of these alternative investments may offer
fixed rates of return and guaranteed principal, and may be insured. Economic
indicators may include, without limitation, indicators of market rate trends and
cost of funds, such as Federal Home Loan Bank Board 11th District Cost of Funds
Index (COFI).
 
     Each Series' shares are sold at net asset value. Each Series' returns will
fluctuate. Shares of a Series are redeemable by an investor at the then current
net asset value, which may be more or less than original cost. Additional
information concerning each Series' performance appears in the Statement of
Additional Information, and in the Trust's Annual Report to Shareholders which
may be obtained, without charge, by writing or calling the Trust.
 
     SHAREHOLDER INQUIRIES -- All inquiries regarding the Trust should be
directed to the Trust at the telephone number or address shown on the cover page
of this Prospectus.
 
- --------------------------------------------------------------------------------
                                   TAX STATUS
- --------------------------------------------------------------------------------
 
     The Trust's policy is to meet the requirements of Subchapter M of the
Internal Revenue Code. Each Series intends to distribute all its taxable net
investment income and capital gains to shareholders, and therefore, will not be
required to pay any federal income taxes.
 
     Each Series of the Trust is treated as a separate entity for purposes of
the regulated investment company provisions of the Internal Revenue Code, and,
therefore, the assets, income, and distributions of each Series are considered
separately for purposes of determining whether or not the Series qualifies as a
regulated investment company.
 
                                       33
<PAGE>   35
 
CUSTODIAN AND TRANSFER AGENT
 
The Northern Trust Company
Fifty South LaSalle Street
Chicago, Illinois 60675
 
INDEPENDENT ACCOUNTANTS
 
Price Waterhouse LLP
100 East Wisconsin Avenue
Milwaukee, Wisconsin 53202
 
LEGAL COUNSEL
 
Blazzard, Grodd & Hasenauer, P.C.
943 Post Road East
Westport, CT 06881
 
INVESTMENT ADVISER
 
Jackson National Financial Services, Inc.
5901 Executive Drive
Lansing, Michigan 48911
 
                                       34
<PAGE>   36
 
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                      APPENDIX A -- RATINGS OF INVESTMENTS
- --------------------------------------------------------------------------------
 
COMMERCIAL PAPER RATINGS
 
A-1, A-2 AND PRIME-1, PRIME-2 COMMERCIAL PAPER RATINGS
 
     Commercial paper rated by Standard & Poor's Ratings Group has the following
characteristics: Liquidity ratios are adequate to meet cash requirements.
Long-term senior debt is rated "A" or better. The issuer has access to at least
two additional channels of borrowing. Basic earnings and cash flow have an
upward trend with allowance made for unusual circumstances. Typically, the
issuer's industry is well established and the issuer has a strong position
within the industry. The reliability and quality of management are unquestioned.
Relative strength or weakness of the above factors determine whether the
issuer's commercial paper is rated A-1 or A-2.
 
     The ratings Prime-1 and Prime-2 are the two highest commercial paper
ratings assigned by Moody's Investors Service, Inc. Among the factors considered
by it in assigning ratings are the following: (1) evaluation of the management
of the issuer; (2) economic evaluation of the issuer's industry or industries
and an appraisal of speculative-type risks which may be inherent in certain
areas; (3) evaluation of the issuer's products in relation to competition and
customer-acceptance; (4) liquidity; (5) amount and quality of long-term debt;
(6) trend of earnings over a period of ten years; (7) financial strength of a
parent company and the relationships which exist with the issuer; and (8)
recognition by the management of obligations which may be present or may arise
as a result of public interest questions and preparations to meet such
obligations. Relative strength or weakness of the above factors determines
whether the issuer's commercial paper is rated Prime-1 or 2.
 
CORPORATE BONDS
 
  STANDARD & POOR'S RATINGS GROUP BOND RATINGS
 
     AAA. Debt rated AAA has the highest rating assigned by Standard & Poor's.
Capacity to pay interest and repay principal is extremely strong.
 
     AA. Debt rated AA has a very strong capacity to pay interest and repay
principal and differs from the higher rated issued only in small degree.
 
     A. Debt rated A has a strong capacity to pay interest and repay principal
although it is somewhat more susceptible to the adverse effects of changes in
circumstances and economic conditions than debt in higher rated categories.
 
     BBB. Debt rated BBB is regarded as having an adequate capacity to pay
interest and repay principal. Whereas it normally exhibits adequate protection
parameters, adverse economic conditions or changing circumstances are more
likely to lead to a weakened capacity to pay interest and repay principal for
debt in this category than in higher rated categories.
 
     BB, B, CCC, CC, C. Debt rated BB, B, CCC, CC, and C is regarded, on
balance, as predominantly speculative with respect to capacity to pay interest
and repay principal in accordance with the terms of the obligation. BB indicates
the lowest degree of speculation and C the highest degree of speculation. While
such debt will likely have some quality and protective characteristics, these
are outweighed by large uncertainties or major risk exposures to adverse
conditions.
 
     CI. The rating CI is reserved for income bonds on which no interest is
being paid.
 
     D. Debt rated D is in default, and payment of interest and/or repayment of
principal is in arrears.
 
  MOODY'S INVESTORS SERVICE, INC. BOND RATINGS
 
     AAA. Bonds which are rated Aaa are judged to be of the best quality. They
carry the smallest degree of investment risk and are generally referred to as
"gilt-edge." Interest payments are protected by a large or by an exceptionally
stable margin and principal is secure. While the various protective elements are
likely to change, such changes as can be visualized are most unlikely to impair
the fundamentally strong position of such issues.
 
     AA. Bonds which are rated Aa are judged to be of high quality by all
standards. Together with the Aaa group, they comprise what are generally known
as high grade bonds. They are rated lower than the best bonds because margins of
protection may not be as large as in Aaa securities or fluctuation of protective
elements may be of greater amplitude or there may be other elements present
which make the long-term risks appear somewhat larger than in Aaa securities.
 
     A. Bonds which are rated A possess many favorable investment attributes and
are to be considered as upper medium grade obligations. Factors giving security
to principal and interest are considered adequate but elements may be present
which suggest a susceptibility to impairment sometime in the future.
 
                                       A-1
<PAGE>   37
 
     BAA. Bonds which are rated Baa are considered as medium grade obligations,
i.e., they are neither highly protected nor poorly secured. Interest payments
and principal security appear adequate for the present but certain protective
elements may be lacking or may be characteristically unreliable over any great
length of time.
 
     Such bonds lack outstanding investment characteristics and, in fact, have
speculative characteristics as well.
 
     BA. Bonds which are rated Ba are judged to have speculative elements; their
future cannot be considered as well assured. Often the protection of interest
and principal payments may be very moderate and thereby not well safeguarded
during both good and bad times over the future. Uncertainty of position
characterizes bonds in this class.
 
     B. Bonds which are rated B generally lack characteristics of the desirable
investment. Assurance of interest and principal payments or of maintenance of
other terms of the contract over any long period of time may be small.
 
     CAA. Bonds which are rated Caa are of poor standing. Such issues may be in
default or there may be present elements of danger with respect to principal and
interest.
 
     CA. Bonds which are rated Ca represent obligations which are speculative in
a high degree. Such issues are often in default or have other marked
shortcomings.
 
     C. Bonds which are rated C are the lowest rated class of bonds and issues
so rated can be regarded as having extremely poor prospects of ever attaining
any real investment standing.
 
MUNICIPAL BONDS
 
STANDARD & POOR'S RATINGS GROUP MUNICIPAL BOND RATINGS
 
     AAA. Bonds rated AAA have the highest rating assigned by Standard & Poor's.
Capacity to pay interest and repay principal is extremely strong.
 
     AA. Bonds rated AA have a very strong capacity to pay interest and repay
principal and differ from the higher rated issues only in small degree.
 
     A. Bonds which are rated A have a strong capacity to pay interest and repay
principal although they are somewhat more susceptible to the adverse effects of
changes in circumstances and economic conditions than debt in higher rated
categories.
 
     BBB. Bonds which are rated BBB are regarded as having an adequate capacity
to pay interest and repay principal. Whereas they normally exhibit adequate
protection parameters, adverse economic conditions or changing circumstances are
more likely to lead to a weakened capacity to pay interest and repay principal
for bonds in this category than for bonds in higher rated categories.
 
     Plus (+) or Minus (-): The ratings from "AA" to "B" may be modified by the
addition of a plus or minus sign to show relative standing within the major
rating categories.
 
MOODY'S INVESTORS SERVICE, INC. MUNICIPAL BOND RATINGS
 
     AAA. Bonds which are rated Aaa are judged to be of the best quality. They
carry the smallest degree of investment risk and are generally referred to as
"gilt-edge." Interest payments are protected by a large or by an exceptionally
stable margin and principal is secure. While the various protective elements are
likely to change, such changes as can be visualized are most unlikely to impair
the fundamentally strong position of such issues.
 
     AA. Bonds which are rated Aa are judged to be of high quality by all
standards. Together with the Aaa group, they comprise what are generally known
as high grade bonds. They are rated lower than the best bonds because margins of
protection may not be as large as in Aaa securities or fluctuation of protective
elements may be of greater amplitude or there may be other elements present
which make the long-term risks appear somewhat larger than in Aaa securities.
 
     A. Bonds which are rated A possess many favorable investment attributes and
are to be considered as upper medium grade obligations. Factors giving security
to principal and interest are considered adequate but elements may be present
which suggest a susceptibility to impairment sometime in the future.
 
     BAA. Bonds which are rated Baa are considered as medium grade obligations,
i.e., they are neither highly protected nor poorly secured. Interest payments
and principal security appear adequate for the present but certain protective
elements may be lacking or may be characteristically unreliable over any great
length of time. Such bonds lack outstanding investment characteristics and, in
fact, have speculative characteristics as well.
 
     NOTE: Moody's applies numerical modifiers, 1, 2 AND 3 in each generic
rating classification from "AA" through "B" in its corporate bond rating system.
The modifier 1 indicates that the security ranks in the higher end of its
generic rating category; the modifier 2 indicates a mid-range ranking; and the
modifier indicates that the issue ranks in the lower end of its generic rating
category.
 
                                       A-2
<PAGE>   38
                                    [LOGO]

                   JACKSON NATIONAL LIFE INSURANCE COMPANY
                   ---------------------------------------
                       Insuring your financial future.

                        Home Office: Lansing, Michigan

                        http://www.jacksonnational.com

HR 105 197


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