|MadSci Network: Evolution|
I've read that the Great Rift Valley appeared about 7 million years ago, separating the eastern portion of Africa from the western part. This geographical change caused the eastern part to become a drier, more savannah-like climate while the western part remained tropical. The divergence of the would-be great apes and the would-be humans occured around this time (7 million years ago). Did the appearance of the Rift Valley cause this divergence? Did human ancestors evolve (from the common ape/human ancestor) on the eastern side of the drift, isolated from the western primates that eventually became the great apes?
Re: Did the Rift Valley separate the apes from the humans?
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