Same Difference: Twins' gene regulation isn't identical

By Christen Brownlee, 15:52 PM April 15, 2008

Although identical twins have identical DNA, they often harbor clear-cut differences: slight variations in appearance or stark distinctions in disease susceptibility, for example. Scientists have suggested that the interplay between nature and nurture could explain such differences, but the mechanism has been poorly understood.

A new study suggests that as identical twins go through life, environmental influences differently affect which genes are turned on and which are switched off.

Called e...

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