In promiscuous primates, sperm feel need for speed | New Scientist - Chimpanzee sperm human spem
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The humanzee (Homo sapiens sapiens × Pan) is a hypothetical chimpanzee/human hybrid. In , researcher J. Michael Bedford discovered that human sperm could penetrate the protective outer membranes of a gibbon egg. Bedford's. There are large differences between sperm counts (total number of sperm found in an ejaculate) of humans and chimpanzees. Chimpanzees and bonobos.