Tuesday, July 24, 2012

New Study Shows Where "Identical" Twins Part Ways

Identical twins aren’t perfect carbon copies of each other even at birth. Twins emerge from the womb carrying different chemical marks on their DNA that influence the activity of individual genes, a new study shows. Known as epigenetic markers, these alterations don’t change the underlying genetic information. But by regulating the activity of certain genes, they can profoundly influence how the DNA blueprint is used to create and operate a living organism. more

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