Nigerians

Source: The History of African Gene Flow into Southern Europeans, Levantines, and Jews (U.S National Library of Medicine National Institutes of Health) 2011 A.D. From the source, "...Previous genetic studies have suggested a history of sub-Saharan African gene flow into some West Eurasian populations after the initial dispersal out of Africa that occurred at least 45,000 years ago. However, there has been no accurate characterization of the proportion of mixture, or of its date. We analyze genome-wide polymorphism data from about 40 West Eurasian groups to show that almost all Southern Europeans have inherited 1%–3% African ancestry with an average…