BIOL 1F25 Lecture Notes - Lecture 10: Purgatorius, Selective Breeding, Canidae
21 Jul 2015
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Epilogue: molecular data suggests multiple domestications in multiple areas, canids artificially selected for tameness also showed characteristics common to domestic dogs. Mechanisms of evolution: mutation, natural (and artificial) selection, gene flow, genetic drift. Purgatories unio: purgatorius is the genus of the four extinct species believed to be the earliest example of a primate or a proto-primate, 55-65 mya, lived in n. america and europe. The various living primates: prosimians (premonkeys: loris, lemurs, tarsiers, most mammals make vitamin c but many primates do not, among animals that have lost the ability to synthesise vitamin c, are simians and tarsiers. Old world monkeys: baboons, tail is characteristic of monkeys, mandrill, snow monkeys. New world monkeys: spider monkey, squirrel monkey. Apes: orangutan, gorilla, apes do not have tails, chimpanzee, gibbon- occur in tropical and subtropical rainforests, human. Humans share a common ancestor with other primates: primates are mammals with flexible hands and feet, forward- looking eyes and enlarged brains.
