a simple question

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Offline writergrl

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a simple question
« on: 03/02/2006 22:51:13 »
Is it possible for identical twins to have different eye colors?
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Offline neilep

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Re: a simple question
« Reply #1 on: 03/02/2006 22:55:28 »
Hi Mariam...welcome to the site.

I am sure that identical twins , by definition , must have the same eye colour...they have the exact same DNA profile.



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Men are the same as women, just inside out !

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Offline Ray hinton

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Re: a simple question
« Reply #2 on: 04/02/2006 00:59:04 »
unless one is an opthalmic bully,and gives the other a black eye.

every village has one !
its the drugs,y-know.

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Offline wim

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Re: a simple question
« Reply #3 on: 13/02/2006 00:38:06 »
the eye color is determined by about five to six genes, which makes it difficult to predict a child's eye color. In contrast to body height, environmental factors play almost no role in eye color. Scientists say the heritability of eye color is 98%

In identical twins the genes determining eye color are of course identical both twins should have identical eye color. Butt in rare cases (<2%), identical twins have indeed different eye color, which has no genetic cause. I have no idea which factors are responsible for this.