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Human-ape split gets an earlier date: new study revises DNA mutation rate of chimpanzees.
Human and chimpanzee ancestors may have split into different species millions of years earlier than scientists thought, a new study of chimpanzee genetic mutation rates suggests.
In each generation, chimpanzees' average mutation rate is one DNA chemical unit changed out of every 83 million, researchers report in the June 13 Science. That mutation rate is nearly identical to the rate previously calculated for humans using similar methods (SN Online: 6/13/11). If the human and chimp...
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