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Beneficial Gut Bacteria

Beneficial Gut Bacteria

Bacterial strains in the guts of humans and chimpanzees diverged and began to evolve separately 5 million years ago and 15 million years ago in humans and gorillas. Humans and apes evolved into a new specie at about the same time. A mutually beneficial relationship between gut bacteria and animal hosts may contribute to the formation of a new species.

Credit: Darryl Leja, NHGRI.



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