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Date: 2006-07-18 13:46:55 Human evolution Apes Chimpanzees Recent single origin hypothesis Phylogenetics Orangutan Hominidae Common chimpanzee Sumatran orangutan Biology Zoology Genetics		Add to Reading List Source URL: email.eva.mpg.de Download Document from Source Website File Size: 171,68 KB Share Document on Facebook

	American Journal of Primatology 73:1–RESEARCH ARTICLE Male Chimpanzees’ Grooming Rates Vary by Female Age, Parity, and Fertility Status DARBY P. PROCTOR1, SUSAN P. LAMBETH2, STEVEN J. SCHAPIRO2, AND SARAH DocID: 1uBqa - View Document
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	Adult Cleaner Wrasse Outperform Capuchin Monkeys, Chimpanzees and Orang-utans in a Complex Foraging Task Derived from Cleaner – Client Reef Fish Cooperation Lucie H. Salwiczek1., Laurent Pre´toˆt2,3., Lanila Demarta2 DocID: 1urXH - View Document
	Prestige Affects Cultural Learning in Chimpanzees Victoria Horner1*, Darby Proctor1, Kristin E. Bonnie2, Andrew Whiten3, Frans B. M. de Waal1 1 Living Links, Yerkes National Primate Research Center, Emory University, Law DocID: 1uo9W - View Document
	Fig. 6. Two adult male chimpanzees in Kanawara groom. Male chimpanzees participate in a variety of cooperative activities and form close social bonds. [Photograph taken by Ian Gilby] izations of at least 100 other indivi DocID: 1tFzk - View Document