MadSci Network: Genetics

Subject: What leads to identical twins having non-identical fingerprints?

Date: Fri May 4 07:26:56 2001
Posted by Andrew Louka
Grade level: grad (science) School: University of Oslo
City: Oslo State/Province: No state entered. Country: Norway
Area of science: Genetics
ID: 988975616.Ge
Message:

After scouring the MadSci archives, I have become fascinated by the formation 
of fingerprints.  One important question, however, remains distinctly 
unanswered:

Monozygotic (identical; MZ) twins have (essentially) identical DNA, and are 
therefore identical in all respects, except where their DNA is later "cut and 
pasted" (e.g. immune function/MHC) or where environmental factors exert their 
influence.

As MZ twin DNA is presumably identical at the loci coding for fingerprints, I 
can only conclude that there are environmental factors that lead to identical 
twins having absolutely non-identical fingerprints.

Are the environmental factor(s) that influence fingerprint formation known?

Many thanks for putting my mind at rest (and settling a bet!).




Re: What leads to identical twins having non-identical fingerprints?

Current Queue | Current Queue for Genetics | Genetics archives

Try the links in the MadSci Library for more information on Genetics.


MadSci Network, webadmin@www.madsci.org
© 1995-2001. All rights reserved.