NEW YORK (GenomeWeb News) – A pair of studies appearing online today in Science refute the notion that the common male ancestor of modern humans is significantly younger than his female counterpart.

For the first of the two studies, Stanford University's Carlos Bustamante and colleagues from the US and France did genome sequencing on 69 men from nine human populations in an effort to retrace the time to men's most recent common ancestor — nicknamed the Y chromosomal "Adam."

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