Wednesday, February 16, 2011

Chimpanzees produce 200 times more sperm than gorillas, the world's largest primates, and 14 times more than orangutans

Promiscuous ape species have bigger testicles, and the latest discovery finally provides evidence that they also produce more sperm. Scientists previously proposed that chimps have large testicles because several males mate with a single female, and so have to produce more sperm in order to compete.

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