How close are orangutans to humans?
Orangutans share 98% of the genetic material with humans. They branched off from the hominoid line (the common ancestor of humans and apes) about 8-12 million years ago. Gibbons, gorillas, and chimpanzees (and bonobos) split from the hominid line about 17 million years ago, 8 million years ago, and 5-6 million years ago, respectively.