Not only did the evolutionary parting of human from chimpanzee ancestors occur more recently than had been indicated by previous data, but it also played out over an extended period during which forerunners of people and chimps interbred.
That controversial possibility arises from a new genetic comparison of people, chimps, gorillas, orangutans, and macaque monkeys.
Log in
Subscribers, enter your e-mail address for full access to the Science News archives and digital editions.