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According to the complete replacement model anatomically homo sapiens first appreared in Africa?
Wiki User
∙ 14y ago
Actually Homo Erectus were first appeared before Homo Sapiens, they replaced the Homo Erectus about 400,000 years ago. A lot of species appeared in Africa before the Homo Sapiens.
Wiki User
∙ 14y ago
Yes, according to the complete replacement model, anatomically modern Homo sapiens first appeared in Africa around 200,000 years ago. This model suggests that Homo sapiens evolved solely in Africa and then spread out to replace other hominin species like Neanderthals.
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How long have human beings existed?
200,000 years agoHuman have existed for roughly half a million years, but this answer depends on the exact definition of "human". Fossil evidence shows that several human-like lineages developed during the past million years or so. >From fossils, the appearance of Homo sapiens is dated at about half a million years, and of anatomically modern Homo sapiens at about a hundred thousand years, values that are also supported by genomic evidence. Another data point, although not something you asked directly, is that the recent complete sequencing of the genome of the chimpanzee, which is the closest living relative of humans, suggests that chimps and humans diverged from their common ancestor about 6 million years ago. Of the many intermediate related species that have existed since then, only chimps and modern humans survive today.This is fromhttp://astrobiology.NASA.gov/ask-an-astrobiologist/question/?id=1522 it took 1 second to find in Google. I don't understand why people don't search questions before using this service.
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