Horse Gestation

Released January 30, 2012
 
Every horse in the world can be traced to a single mare that trotted the earth about 130,000 to 160,000 years ago, scientists discovered for the first time.

The research identified 18 different genetic clusters that arose from the ancestral mare, suggesting that domestication occurred in many places across Europe and Asia, according to work published today in the Proceedings of the National Academy of Sciences.

The study helps pinpoint the time when humans began domesticating horses, though it was known to be after dogs, sheep, pigs and cattle. The research may also help scientists classify horse fossils, figure out the pedigree of modern breeds and perhaps evaluate how genetics affect racehorse performance, said Samantha Brooks, an assistant professor of equine genetics at Cornell University, in a telephone interview.

--continued on Businessweek, http://www.businessweek.com/news/2012-01-30/ancestral-mother-of-all-hors...

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