APY107 - Primate Evolution

APY107 - Primate Evolution - Primate Evolution: social...

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Unformatted text preview: Primate Evolution: social behavior, intelligence, & anatomy Altruism Any behavior that benefits the group at the expense of the individuals self interest. Altruism is, therefore, an important behavior to explain from the Darwinian perspective. Meerkats Altruistic behavior is best explained as a product of kin selection, or in some cases as reciprocal altruism? Inclusive Fitness The sum of an individuals reproductive fitness and that added by altruistic acts for kin. Primate Intelligence Orangutan tool-use use branches and vines to threaten leaves as rain hats tool manufacture in form of sticks for extracting ants, bees, etc from holes, opening fruit leaf plates Primate anatomical evolution Earliest primate characteristics: terrestrial nocturnal rodent-like Survived the K-T Extinction event and were part of the subsequent mammalian adaptive radiation The earliest true primate niche was arboreal The Paleocene Epoch circa 65-55 mya Plesiadapiforms Primate ancestor or flying squirrel? Plesiadapiforms characteristics:...
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APY107 - Primate Evolution - Primate Evolution: social...

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