Do identical twins have identical dna?

It is a basic tenet of human biology, taught in grade schools everywhere: Identical twins come from the same fertilized egg and, thus, share identical genetic profiles. But according to new research, though identical twins share very similar genes, identical they are not. read more

After all, they derive from just one fertilized egg, which contains one set of genetic instructions, or genome, formed from combining the chromosomes of mother and father. read more

Also, some things in development are a little bit random, and not just due to DNA. For example, identical twins have similar, but not identical, fingerprints. Answer 2: Identical do have the same genotype. After all, they come from the same fertilized egg. Recent studies have shown that identical twins have very "similar" not "identical" DNA, but for the most part, according to basic biology it is identical. read more

After all, they derive from just one fertilized egg, which contains one set of genetic instructions, or genome, formed from combining the chromosomes of mother and father. But experience shows that identical twins are rarely completely the same. read more