Curved thumb

Peter Gooding pwg02 at wumpus.cc.uow.edu.au
Mon Oct 21 19:26:58 EST 1996


ifenton at hgmp.mrc.ac.uk (I. Fenton) wrote:
>TaroLover <tarolove at interserve.com.hk> wrote:
>>My student is a twin, he has a right curved thumb and left straight
>>thumb. But his elder btother has a left curved thumb and right
>>straight thumb. But their father and mother are both right straight
>>thumb and left straight thumb.
>>How to explain the above event?
>>Would any Biology experts can answer my question, please send me a
>>E-mail. Thank You! :)
>
>well, i'm no biology 'expert', but i've done some analysis.  the
>first question for you is are these twins monozygotic or
>not ?  it makes a big difference to the question/answer...
>
>Iain.
>
Are identical twins mirror images or double images of each other? 
(I thought it was the latter. However, at some stage in the process they 
are joined on opposite sides.).

Peter. 






More information about the Gen-link mailing list