Klingan Posted July 18, 2007 Report Share Posted July 18, 2007 Twenty years after it was popularized, the "Out of Africa" theory, which posits that modern humans originally came from Africa before spreading out in a global conquest, has received an emphatic boost, scientists said on Wednesday. Rival theories about the rise of Homo sapiens sapiens, as anatomically modern man is called, say humans either came from a single point in Africa or among different populations in different parts around the world, who evolved independently from a forebear, Homo erectus. The "Out of Africa" scenario has been underpinned since 1987 by genetic studies based mainly on the rate of mutations in mitochondrial DNA, a genetic material inherited from the maternal line of ancestry. Read more here. Quote Link to comment Share on other sites More sharing options...
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