UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                 SCHEDULE 13G/A
                                 Amendment No. 1
                    Under the Securities Exchange Act of 1934




                             Lynx Therapeutics, Inc.
                                (Name of Issuer)


                                  Common Stock
                         (Title of Class of Securities)

                                  000551812308
                                 (CUSIP Number)

                                  June 30, 2002
             (Date of Event Which Requires Filing of this Statement)


Check the  appropriate box to designate the rule pursuant to which this Schedule
is filed:
[   ]        Rule 13d-1(b)
[ X ]        Rule 13d-1(c)
[   ]        Rule 13d-1(d)
*The  remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for any  subsequent  amendment  containing  information  which  would  alter the
disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).



CUSIP No. 000551812308

      1.  Names of Reporting Persons.
          I.R.S. Identification Nos. of above persons (entities only).
          Friedman, Billings, Ramsey Group, Inc.
          54-1837743

      2.  Check the Appropriate Box if a Member of a Group (See Instructions)

          (a) [   ]

          (b) [ X ]


      3.  SEC Use Only


      4.  Citizenship or Place of Organization
          Virginia


Number of
Shares
Beneficially
Owned by
Each Reporting
Person With
                            5.                        Sole Voting Power
                                                      1,361,736

                            6.                        Shared Voting Power
                                                      0

                            7.                        Sole Dispositive Power
                                                      1,361,736
                            8.                        Shared Dispositive Power
                                                      0

     9.    Aggregate Amount Beneficially Owned by Each Reporting Person
           1,361,736

     10.   Check if the Aggregate Amount in Row (9) Excludes Certain Shares
           (See Instructions)


     11.   Percent of Class Represented by Amount in Row (9)
           4.79%

     12.   Type of Reporting Person (See Instructions)
           HC





CUSIP No. 000551812308


              1.           Names of Reporting Persons.
                           I.R.S. Identification Nos. of above persons
                           (entities only).

                           Eric F. Billings

              2.           Check the Appropriate Box if a Member of a Group
                           (See Instructions)

                           (a) [   ]

                           (b) [ X ]


              3.           SEC Use Only


              4.           Citizenship or Place of Organization
                           United States

Number of Shares
Beneficially
Owned by
Each Reporting
Person With
                            5.                        Sole Voting Power
                                                      0

                            6.                        Shared Voting Power
                                                      1,361,736

                            7.                        Sole Dispositive Power
                                                      0

                            8.                        Shared Dispositive Power
                                                      1,361,736

 9.           Aggregate Amount Beneficially Owned by Each Reporting Person
              1,361,736

 10.          Check if the Aggregate Amount in Row (9) Excludes Certain Shares
              (See Instructions)


 11.          Percent of Class Represented by Amount in Row (9)
              4.79%

 12.          Type of Reporting Person (See Instructions)
              IN






CUSIP No. 000551812308

             1.
                           Names of Reporting Persons.
                           I.R.S. Identification Nos. of above persons
                           (entities only).

                           Emanuel J. Friedman

              2.           Check the Appropriate Box if a Member of a Group
                           (See Instructions)

                           (a) [   ]

                           (b) [ X ]


              3.           SEC Use Only


              4.           Citizenship or Place of Organization
                           United States


Number of
Shares
Beneficially
Owned by
Each Reporting
Person With
                 5.                        Sole Voting Power
                                           0

                 6.                        Shared Voting Power
                                           1,361,736

                 7.                        Sole Dispositive Power
                                           0

                 8.                        Shared Dispositive Power
                                           1,361,736

 9.           Aggregate Amount Beneficially Owned by Each Reporting Person
              1,361,736

 10.          Check if the Aggregate Amount in Row (9) Excludes Certain Shares
              (See Instructions)


 11.          Percent of Class Represented by Amount in Row (9)
              4.79%

 12.          Type of Reporting Person (See Instructions)
              IN







Item 1.
           (a)  Name of Issuer
                Lynx Therapeutics, Inc.
                Address of Issuer's Principal Executive Offices
           (b)  25861 Industrial Blvd.
                Hayward, CA  94545


Item 2.
           (a)  Name of Person Filing:  Friedman, Billings, Ramsey Group, Inc.

                Address of Principal Business Office or, if none, Residence
           (b)  1001 19th Street North
                Arlington, VA  22209
           (c)  Citizenship:  Virginia

           (d)  Title of Class of Securities:  Common Stock

           (e)  CUSIP Number:  358433100



Item 3.          If this statement is filed pursuant to Section 240.13d-1(b) or
                 240.13d-2(b) or (c), check whether the person filing is a:

    (a)   [   ]      Broker or dealer registered under section 15 of the
                     Act (15 U.S.C. 78o).
    (b)   [   ]      Bank as defined in section 3(a)(6) of the Act (15
                     U.S.C. 78c).
    (c)   [   ]      Insurance company as defined in section 3(a)(19) of
                     the Act (15 U.S.C. 78c).
    (d)   [   ]      Investment company registered under section 8 of the
                     Investment Company Act of 1940 (15 U.S.C 80a-8).
    (e)   [   ]      An investment adviser in accordance with
                     Section 240.13d-1(b)(1)(ii)(E);
    (f)   [   ]      An employee benefit plan or endowment fund in
                     accordance with Section 240.13d-1(b)(1)(ii)(F);
    (g)   [ X ]      A parent holding company or control person in
                     accordance with Section 240.13d-1(b)(1)(ii)(G);
    (h)   [   ]      A savings associations as defined in Section 3(b) of
                     the Federal Deposit Insurance Act (12 U.S.C. 1813);
    (i)   [   ]      A church plan that is excluded from the definition
                     of an investment company under section 3(c)(14) of
                     the Investment Company Act of 1940 (15 U.S.C. 80a-3);
    (j)   [   ]      Group, in accordance with Section 240.13d-1(b)(1)(ii)(J).


Item 4.          Ownership.
Provide the following information regarding the aggregate number and percentage
of the class of securities of the issuer identified in Item 1.

  (a)                 Amount beneficially owned: 1,361,736.

  (b)                 Percent of class:  4.79%.

  (c)                 Number of shares as to which the person has:

          (i)           Sole power to vote or to direct the vote
                        1,361,736.

          (ii)          Shared power to vote or to direct the vote
                        0.

          (iii)         Sole power to dispose or to direct the disposition of
                        1,361,736.

          (iv)          Shared power to dispose or to direct the disposition of
                        0.


Item 5.          Ownership of Five Percent or Less of a Class

If this  statement  is being filed to report the fact that as of the date hereof
the  reporting  person has ceased to be the  beneficial  owner of more than five
percent of the class of  securities,  check the  following  [ X ].

Instruction: Dissolution of a group requires a response to this item.

Item 6.      Ownership of More than Five Percent on Behalf of Another Person.

If any other person is known to have the right to receive or the power to direct
the  receipt  of  dividends  from,  or the  proceeds  from  the  sale  of,  such
securities,  a statement  to that effect  should be included in response to this
item and, if such interest relates to more than five percent of the class,  such
person  should be  identified.  A listing of the  shareholders  of an investment
company registered under the Investment Company Act of 1940 or the beneficiaries
of employee benefit plan, pension fund or endowment fund is not required.

N/A

Item 7.  Identification  and Classification of the Subsidiary Which Acquired the
         Security Being Reported on By the Parent Holding Company or Control
         Person.

If a parent holding company or Control person has filed this schedule,  pursuant
to Rule  13d-1(b)(1)(ii)(G),  so indicate  under Item 3(g) and attach an exhibit
stating the identity and the Item 3 classification  of the relevant  subsidiary.
If a parent holding  company or control person has filed this schedule  pursuant
to Rule 13d-1(c) or Rule 13d-1(d),  attach an exhibit stating the identification
of the relevant subsidiary.

Friedman, Billings, Ramsey & Co., Inc.  3(a)

Friedman, Billings, Ramsey Investment, Inc.  3(e)

Item 8.          Identification and Classification of Members of the Group

If a group has filed this schedule  pursuant to Section  240.13d-1(b)(1)(ii)(J),
so indicate under Item 3(j) and attach an exhibit  stating the identity and Item
3 classification of each member of the group. If a group has filed this schedule
pursuant  to Section  240.13d-1(c)  or Section  240.13d-1(d),  attach an exhibit
stating the identity of each member of the group.

Item 9.          Notice of Dissolution of Group

Notice of dissolution of a group may be furnished as an exhibit stating the date
of the  dissolution and that all further filings with respect to transactions in
the security reported on will be filed, if required, by members of the group, in
their individual capacity. See Item 5.

Item 10.         Certification

By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were not acquired and are not
held for the purpose of or with the effect of changing or influencing
the control of the issuer of the securities and were not acquired and
are not held in connection with or as a participant in any transaction
having that purpose or effect.


In accordance with Rule 13d-4 of the Securities Exchange Act of 1934,
each of the persons filing this statement expressly disclaims the
beneficial ownership of the securities covered by this statement and
the filing of this report shall not be construed as an admission by
such persons that they are the beneficial owners of such securities.


                                    SIGNATURE

After  reasonable  inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.


                                   FRIEDMAN, BILLINGS, RAMSEY GROUP, INC.

Date:  July 10, 2002           By: /s/ EMANUEL J. FRIEDMAN
                                   ----------------------------
                                   Name:  Emanuel J. Friedman
                                   Title: Chairman

Date:  July 10, 2002               /s/ ERIC F. BILLINGS
                                   ----------------------------
                                   Name:  Eric F. Billings


Date:  July 10, 2002               /s/ EMANUEL J. Friedman
                                   ----------------------------
                                   Name:  Emanuel J. Friedman