X chromosome is extra diverse | Science News

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X chromosome is extra diverse

The unexpected diversity comes courtesy of randy males

6:50pm, September 25, 2008
Men who have children with multiple women spread genetic diversity along with their wild oats, a new study shows.

DNA analysis of nonfunctional regions on the X chromosome and on the non-sex chromosomes (called autosomes) in six different groups of people from three continents reveals that the X chromosome is more genetically diverse than would be expected if men and women were equally successful at passing along their genes.

A group of researchers led by Michael Hammer at the University of Arizona in Tucson present evidence in the Sept. 26 PLoS Genetics that polygyny, the practice of men siring children from many different women, accounts for the pattern of extra diversity

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