Diverse Faces Keep Guenon Monkeys From Interbreeding

June 26, 2014 9:09 PM

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A group of Old World monkeys called guenons have undergone an incredible diversification in facial appearance to avoid interbreeding with closely related species.

William Allen and James Higham, of New York University, and Martin Stevens, of the University of Exeter, analyzed the unique faces of 22 guenon species. Their work, which provides some of the best evidence for the role of visual signals as impediments to breeding across species, is published in the ...

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