genetically identical....

opuntia · Post by **opuntia** » Tue Nov 01, 2005 10:06 am

genetically identical....

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Post by opuntia » Tue Nov 01, 2005 10:06 am

According to my text book,the genes of identical twins are identical. Does that mean that they are genetically identical too?

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Morris · Post by **Morris** » Tue Nov 01, 2005 10:33 am

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Post by Morris » Tue Nov 01, 2005 10:33 am

If I'm not wrong twins are not completely identical genetically, but they have a small differences, I think in VNTR. Infact these repeteas make the difference between father and son and think between twins.

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Navin · Post by **Navin** » Tue Nov 01, 2005 10:42 am

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Post by Navin » Tue Nov 01, 2005 10:42 am

do they have similar finger prints?

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GreenDog · Post by **GreenDog** » Tue Nov 01, 2005 12:56 pm

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Post by GreenDog » Tue Nov 01, 2005 12:56 pm

Identical twins are genetically identical, but there are epigenetic factors which are determined during pregnancy fingerprints is one of them, so they do not have the same fingerprints.
I suppose the differ in many other small things which are not determined directly by the genes.

zami'87. · Post by **zami'87.** » Tue Nov 01, 2005 8:18 pm

Re: genetically identical....

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Post by zami'87. » Tue Nov 01, 2005 8:18 pm

The mitochondrial DNA may also mutate and change over time, so twins that come from a single zygote can have slightly different mitochondrial genes and traits determined by these genes.