CONSYGEN, INC.

                       2000 COMBINATION STOCK OPTION PLAN

SECTION I. PURPOSE OF THE PLAN.

          The purposes of this ConSyGen, Inc. 2000 Combination Stock Option Plan
(the "2000 Plan") are (i) to provide  long-term  incentives and rewards to those
key  employees  (the  "Employee   Participants")  of  ConSyGen,  Inc.,  a  Texas
corporation  (the  "Corporation"),  and its subsidiaries (if any), and any other
persons (the "Non-employee Participants") who are in a position to contribute to
the long-term success and growth of the Corporation and its  subsidiaries,  (ii)
to assist  the  Corporation  in  retaining  and  attracting  executives  and key
employees  with requisite  experience  and ability,  and (iii) to associate more
closely the interests of such  executives  and key  employees  with those of the
Corporation's stockholders.

SECTION II. DEFINITIONS.

          "Code" is the Internal Revenue Code of 1986, as it may be amended from
time to time.

          "Common  Stock"  is  the  common  stock,   $.003  par  value,  of  the
Corporation.

          "Committee" is defined in Section III, paragraph (a).

          "Corporation" is defined in Section I.

          "Corporation  ISOs" are all stock options  (including  2000 Plan ISOs)
which (i) are  Incentive  Stock  Options  and (ii) are  granted  under any plans
(including this 2000 Plan) of the  Corporation,  a Parent  Corporation  and/or a
Subsidiary Corporation.

          "Employee Participants" is defined in Section I.

          "Fair  Market  Value" of any  property is the value of the property as
reasonably determined by the Committee.

          "Incentive  Stock  Option"  is a stock  option  which is treated as an
incentive stock option under Section 422 of the Code.

          "2000 Plan" is defined in Section I.

          "2000 Plan ISOs" are Stock Options which are Incentive Stock Options.

          "Non-employee Participants" is defined in Section I.

          "Non-qualified  Option" is a Stock Option which does not qualify as an
Incentive Stock Option or for which the Committee provides, in the terms of such
option and at the time such  option is  granted,  that the  option  shall not be
treated as an Incentive Stock Option.

          "Parent Corporation" has the meaning provided in Section 424(e) of the
Code.

          "Participants" are all persons who are either Employee Participants or
Non-employee Participants.

          "Permanent and Total  Disability" has the meaning  provided in Section
22(e)(3) of the Code.

          "Rule 16b-3" means Securities and Exchange Commission Rule 16b-3.

          "Section 16" means Section 16 of the Securities  Exchange Act of 1934,
as amended, or any similar or successor statute, and any rules, regulations,  or
policies adopted or applied thereunder.

          "Stock  Options"  are  rights  granted  pursuant  to this 2000 Plan to
purchase shares of Common Stock at a fixed price.

          "Subsidiary Corporation" has the meaning provided in Section 424(f) of
the Code.

          "Ten Percent  Stockholder" means, with respect to a 2000 Plan ISO, any
individual who directly or indirectly owns stock possessing more than 10% of the
total  combined  voting power of all classes of stock of the  Corporation or any
Parent Corporation or any Subsidiary  Corporation at the time such 2000 Plan ISO
is granted.

SECTION III. ADMINISTRATION.

          (a) THE COMMITTEE.  This 2000 Plan shall be  administered by the Board
of Directors or by a  compensation  committee  consisting  solely of two or more
"non-employee  directors",  as defined in Rule 16b-3, who shall be designated by
the Board of Directors of the Corporation (the  administering  body is hereafter
referred to as the  "Committee").  The Committee  shall serve at the pleasure of
the Board of Directors, which may from time to time, and in its sole discretion,

discharge any member,  appoint  additional new members in substitution for those
previously  appointed  and/or fill vacancies  however caused.  A majority of the
Committee  shall  constitute  a quorum and the acts of a majority of the members
present at any  meeting at which a quorum is present  shall be deemed the action
of the Committee. No person shall be eligible to be a member of the Committee if
that person's  membership would prevent the plan from complying with Section 16,
if applicable to the Corporation.

          (b) AUTHORITY AND DISCRETION OF THE COMMITTEE.  Subject to the express
provisions  of this 2000  Plan and  provided  that all  actions  taken  shall be
consistent  with the purposes of this 2000 Plan, and subject to  ratification by
the Board of Directors only if required by applicable  law, the Committee  shall
have full and complete authority and the sole discretion to: (i) determine those
persons who shall constitute key employees eligible to be Employee Participants;
(ii) select the  Participants  to whom Stock Options shall be granted under this
2000 Plan;  (iii) determine the size and the form of the Stock Options,  if any,
to be granted to any  Participant;  (iv)  determine the time or times such Stock
Options shall be granted including the grant of Stock Options in connection with
other awards made, or compensation  paid, to the Participant;  (v) establish the
terms and  conditions  upon which such Stock  Options  may be  exercised  and/or
transferred,  including the exercise of Stock  Options in connection  with other
awards made, or compensation  paid, to the  Participant;  (vi) make or alter any
restrictions  and  conditions  upon such Stock Options and the Stock received on
exercise  thereof,  including,  but not limited to, providing for limitations on
the Participant's right to keep any Stock received on termination of employment;
(vii)  determine  whether the  Participant or the  Corporation  has achieved any
goals or otherwise  satisfied any conditions or requirements that may be imposed
on or related to the exercise of Stock Options;  and (viii) adopt such rules and
regulations,  establish,  define and/or  interpret these and any other terms and
conditions,  and make all determinations  (which may be on a case-by-case basis)
deemed  necessary  or  desirable  for  the  administration  of this  2000  Plan.
Notwithstanding  any provision of this 2000 Plan to the contrary,  only Employee
Participants shall be eligible to receive 2000 Plan ISOs.

          (c)  APPLICABLE  LAW.  This 2000 Plan and all Stock  Options  shall be
governed by the law of the state in which the Corporation is incorporated.

SECTION IV. TERMS OF STOCK OPTIONS.

          (a)  AGREEMENTS.  Stock  Options  shall  be  evidenced  by  a  written
agreement between the Corporation and the Participant  awarded the Stock Option.
This agreement shall be in such form, and contain such terms and conditions (not
inconsistent  with this 2000 Plan) as the Committee may determine.  If the Stock
Option  described  therein is not intended to be an Incentive Stock Option,  but
otherwise  qualifies as an Incentive  Stock Option,  the agreement shall include
the following or a similar  statement:  "This stock option is not intended to be

an  Incentive  Stock  Option,  as that term is  described  in Section 422 of the
Internal Revenue Code of 1986, as amended."

          (b) TERM. Stock Options shall be for such periods as may be determined
by the  Committee,  provided that in the case of 2000 Plan ISOs, the term of any
such 2000  Plan ISO shall not  extend  beyond  three  months  after the time the
Participant  ceases to be an employee of the  Corporation.  Notwithstanding  the
foregoing, the Committee may provide in a 2000 Plan ISO that in the event of the
Permanent and Total  Disability or death of the  Participant,  the 2000 Plan ISO
may be exercised by the  Participant or his estate (if  applicable) for a period
of up to one year  after  the date of such  Permanent  and Total  Disability  or
Death. In no event may a 2000 Plan ISO be exercisable (including provisions,  if
any, for  exercise in  installments)  subsequent  to ten years after the date of
grant,  or, in the case of 2000 Plan ISOs  granted to Ten Percent  Stockholders,
more than five years after the date of grant.

          (c) PURCHASE PRICE. The purchase price of shares purchased pursuant to
any Stock Option shall be determined by the Committee,  and shall be paid by the
Participant or other person  permitted to exercise the Stock Option in full upon
exercise,  (i) in cash,  (ii) by delivery of shares of Common  Stock  (valued at
their Fair Market Value on the date of such exercise),  (iii) any other property
(valued  at its Fair  Market  Value on the date of such  exercise),  or (iv) any
combination of cash, stock and other property, with any payment made pursuant to
subparagraphs  (ii),  (iii) or (iv) only as permitted by the  Committee,  in its
sole  discretion.  In no event will the  purchase  price of Common Stock be less
than the par value of the  Common  Stock.  Furthermore,  the  purchase  price of
Common  Stock  subject to a 2000 Plan ISO shall not be less than the Fair Market
Value of the  Common  Stock on the date of the  issuance  of the 2000  Plan ISO,
provided that in the case of 2000 Plan ISOs granted to Ten Percent Stockholders,
the  purchase  price shall not be less than 110% of the Fair Market Value of the
Common Stock on the date of issuance of the 2000 Plan ISO.

          (d) FURTHER  RESTRICTIONS AS TO INCENTIVE STOCK OPTIONS. To the extent
that the  aggregate  Fair  Market  Value of Common  Stock with  respect to which
Corporation ISOs (determined without regard to this section) are exercisable for
the first time by any  Employee  Participant  during any  calendar  year exceeds
$100,000,  such  Corporation  ISOs shall be  treated  as  options  which are not
Incentive Stock Options.  For the purpose of this  limitation,  options shall be
taken into account in the order  granted,  and the Committee may designate  that
portion of any  Corporation  ISO that shall be treated as not an Incentive Stock
Option in the event that the provisions of this paragraph  apply to a portion of
any option, unless otherwise required by the Code or regulations of the Internal
Revenue Service. The designation described in the preceding sentence may be made
at  such  time as the  Committee  considers  appropriate,  including  after  the
issuance of the option or at the time of its  exercise.  For the purpose of this
section,  Fair Market Value shall be  determined  as of the time the option with
respect to such stock is granted.

          (e) RESTRICTIONS. At the discretion of the Committee, the Common Stock
issued  pursuant  to the Stock  Options  granted  hereunder  may be  subject  to
restrictions on vesting or transferability. For the purposes of this limitation,
options shall be taken into account in the order granted.

          (f) WITHHOLDING OF TAXES. Pursuant to applicable federal, state, local
or foreign  laws,  the  Corporation  may be required to collect  income or other
taxes upon the grant of a Stock  Option to, or exercise of a Stock  Option by, a
holder.  The Corporation may require,  as a condition to the exercise of a Stock
Option, or demand, at such other time as it may consider  appropriate,  that the
Participant  pay the  Corporation  the amount of any taxes which the Corporation
may determine is required to be withheld or collected, and the Participant shall
comply with the requirement or demand of the Corporation. In its discretion, the
Corporation  may withhold  shares to be received upon exercise of a Stock Option
if it deems this an appropriate method for withholding or collecting taxes.

          (g) SECURITIES LAW COMPLIANCE.  Upon exercise (or partial exercise) of
a Stock Option,  the  Participant or other holder of the Stock Option shall make
such  representations  and furnish  such  information  as may, in the opinion of
counsel for the  Corporation,  be appropriate to permit the Corporation to issue
or transfer  Stock in compliance  with the  provisions of applicable  federal or
state  securities  laws. The  Corporation,  in its discretion,  may postpone the
issuance and delivery of Stock upon any exercise of this Option until completion
of such registration or other  qualification of such shares under any federal or
state  laws,  or  stock  exchange  listing,  as  the  Corporation  may  consider
appropriate.  Furthermore,  the  Corporation  is not  obligated  to  register or
qualify the shares of Common Stock to be issued upon  exercise of a Stock Option
under  federal or state  securities  laws (or to register or qualify them at any
time  thereafter),  and it may  refuse  to issue  such  shares  if,  in its sole
discretion,  registration  or exemption  from  registration  is not practical or
available. The Corporation may require that prior to the issuance or transfer of
Stock upon  exercise of a Stock  Option,  the  Participant  enter into a written
agreement to comply with any  restrictions  on subsequent  disposition  that the
Corporation deems necessary or advisable under any applicable  federal and state
securities  laws.  Certificates  of Stock issued  hereunder  shall bear a legend
reflecting such restrictions.

          (h) RIGHT TO STOCK OPTION. No employee of the Corporation or any other
person shall have any claim or right to be a participant in this 2000 Plan or to
be granted a Stock Option hereunder. Neither this 2000 Plan nor any action taken
hereunder  shall be  construed  as giving any person any right to be retained in
the employ of the Corporation. Nothing contained hereunder shall be construed as
giving  any  person  any  equity or  interest  of any kind in any  assets of the
Corporation or creating a trust of any kind or a fiduciary  relationship  of any
kind between the Corporation and any such person. As to any claim for any unpaid
amounts under this 2000 Plan, any person having a claim for payments shall be an
unsecured creditor.

          (i) INDEMNITY.  Neither the Board of Directors nor the Committee,  nor
any  members of either,  nor any  employees  of the  Corporation  or any parent,
subsidiary,  or  other  affiliate,  shall  be  liable  for  any  act,  omission,
interpretation,  construction or determination  made in good faith in connection
with their  responsibilities with respect to this 2000 Plan, and the Corporation
hereby agrees to indemnify the members of the Board of Directors, the members of
the  Committee,  and  the  employees  of  the  Corporation  and  its  parent  or
subsidiaries  in respect  of any  claim,  loss,  damage,  or expense  (including
reasonable  counsel fees) arising from any such act,  omission,  interpretation,
construction or determination to the full extent permitted by law.

          (j)  PARTICIPATION  BY  FOREIGNERS.  Without  amending this 2000 Plan,
except  to the  extent  required  by the  Code in the  case of  Incentive  Stock
Options,  the Committee may modify grants made to  participants  who are foreign
nationals or employed  outside the United States so as to recognize  differences
in local law, tax policy, or custom.

SECTION V. AMENDMENT AND TERMINATION: ADJUSTMENTS UPON CHANGES IN STOCK.

          The Board of Directors of the  Corporation  may at any time,  and from
time to time, amend, suspend or terminate this 2000 Plan or any portion thereof,
provided that no amendment shall be made without  approval of the  Corporation's
stockholders  if such  approval is necessary to comply with any  applicable  tax
requirement,  any applicable rules or regulations of the Securities and Exchange
Commission,  including  Rule 16b-3 (or any successor  rule  thereunder),  or the
rules and regulations of any exchange or stock market on which the Corporation's
securities  are listed or  quoted.  Except as  provided  herein,  no  amendment,
suspension  or  termination  of this  2000  Plan  may  affect  the  rights  of a
Participant to whom a Stock Option has been granted  without such  Participant's
consent. The Committee is specifically authorized to convert, in its discretion,
the unexercised portion of any 2000 Plan ISO granted to an Employee  Participant
to a  Non-qualified  Option at any time prior to the exercise,  in full, of such
2000 Plan ISO. If there shall be any change in the Common  Stock or to any Stock
Option   granted   under   this  2000  Plan   through   merger,   consolidation,
reorganization, recapitalization, stock dividend, stock split or other change in
the corporate structure of the Corporation,  appropriate adjustments may be made
by the Committee (or if the Corporation is not the surviving  corporation in any
such transaction,  the Board of Directors of the surviving  corporation,  or its
designee) in the aggregate  number and kind of shares subject to this 2000 Plan,
and the number and kind of shares and the price per share subject to outstanding
options,  provided that such adjustment does not affect the qualification of any
2000 Plan ISO as an Incentive  Stock Option.  In connection  with the foregoing,
the  Committee  may issue new Stock  Options in exchange for  outstanding  Stock
Options.

SECTION VI. SHARES OF STOCK SUBJECT TO THE PLAN.

          The number of shares of Common Stock that may be the subject of awards
under this 2000 Plan shall not exceed an aggregate of 5,000,000  shares.  Shares
to be  delivered  under  this 2000 Plan may be either  authorized  but  unissued
shares of Common  Stock or  treasury  shares.  Any  shares  subject to an option
hereunder  which for any reason  terminates,  is canceled or  otherwise  expires
unexercised,  and any shares  reacquired by the  Corporation due to restrictions
imposed on the shares,  shares  returned  because  payment is made  hereunder in
stock of equivalent value rather than in cash,  and/or shares  reacquired from a
recipient for any other reason shall,  at such time, no longer count towards the
aggregate  number of shares which have been the subject of Stock Options  issued
hereunder,  and such number of shares  shall be subject to further  awards under
this 2000 Plan,  provided,  first, that the total number of shares then eligible
for award under this 2000 Plan may not exceed the total  specified  in the first
sentence of this  Section VI, and second,  that the number of shares  subject to
further awards shall not be increased in any way that would cause this 2000 Plan
or any  Stock  Option to not  comply  with  Section  16,  if  applicable  to the
Corporation.

SECTION VII. EFFECTIVE DATE AND TERM OF THIS PLAN.

          The effective date of this 2000 Plan is April 12, 2000 (the "Effective
Date")  and  awards  under  this 2000 Plan may be made for a period of ten years
commencing on the Effective  Date. The period during which a Stock Option may be
exercised may extend beyond that time as provided herein.

DATE OF APPROVAL BY BOARD OF DIRECTORS: As of April 12, 2000