The genetic inheritance of Homo sapiens sapiens, which evolved during the 7m years or so that separate us from our last common ancestor with chimpanzees and bonobos, equipped man to succeed as a hunter-gatherer.

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At different genes, humans share a common genetic ancestor with chimpanzees at different times.

ECONOMIST: Humans could have interbred with chimpanzees

Gorillas are our closest relatives, after chimpanzees and bonobos, having diverged from our common ancestors 8 million years ago.

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The conduit from infected chimpanzees to humans was most likely the mosquito, a common malaria carrier even today.

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