NEW YORK (GenomeWeb) – Today's domestic horses are genetically diverse on the maternal side, as indicated by their mitochondrial DNA, but their genetic diversity is extremely limited on the paternal side, represented by their Y chromosomes.

A team led by researchers at the Leibniz Institute for Zoo and Wildlife Research in Berlin, Germany, has now shed new light on how the domestication of horses over the last few thousand years led to this decrease in Y chromosome variability.

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