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The oft-heard claim is that Homo sapiens evolved from Homo erectus within a small African population with an effective size of about 10,000 individuals. What, exactly is an “effective” population size and how is that different from a “census” population size? Strangely, nobody seems to be able to identify that “population” from which we supposedly arose.
Earlier discussion on Africa on BiblicalGenetics.com:
Some background reading:
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