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[quote=Anonymous][i]The study, published in the journal PLoS Genetics, was led by Reich and doctoral student Priya Moorjani. Nick Patterson, a research scientist who works in Reich’s lab and at the Broad Institute of Harvard and MIT, worked with Moorjani to develop an additional technique —which they called ROLLOFF — for estimating the dates of population mixture events. Together with other contributing researchers, the three determined that southern Europeans bear an average of 1 to 3 percent African ancestry dating back about 55 generations. Groups in the eastern Mediterranean’s Levant region have between 4 and 15 percent African ancestry, with an average mixture date of 32 generations ago, while Jewish populations have between 3 percent and 5 percent African ancestry, dating back on average about 72 generations ago. No African ancestry was found in northern European populations.[/i][/quote]
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