Genetic Study Shakes Up Out of Africa Theory

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Science  19 Mar 1999:
Vol. 283, Issue 5409, pp. 1828
DOI: 10.1126/science.283.5409.1828

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A new DNA analysis is casting doubt on the popular notion that all modern humans descended from one small population of ancient Africans. A population geneticist and an anthropologist have presented evidence that two human populations dating to at least 200,000 years ago left their genetic legacy in modern people. One group gave rise to modern Africans and the other to all non-Africans, they report in the 16 March Proceedings of the National Academy of Sciences.