Orangutans, not chimpanzees, are the closest living relatives to humans, a controversial new study contends. The authors base their conclusion on a close physical resemblance between orangutans and humans, which they say has been overshadowed by genetic evidence linking us to chimps. What's more, the study authors argue, the genetic evidence itself is flawed. John Grehan say that the DNA evidence cited by many scientists only looks at a small percentage of the human and chimp genomes. (source: news.nationalgeographic.com)
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