Primate Intro 2010

Primate Intro 2010 - The Order Primates Why study primates?...

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The Order Primates
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Why study primates? 1. Compare humans to modern primates to see how alike and different we are. Many physical characteristics we think of as human are common to primates. 2. What are the implications of shared characteristics between humans and other primates? - which traits are primate in general? - Do we share traits because our ancient common ancestor had those traits?
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Homology: similar trait inherited from a common ancestor These are the traits of special interest to us: if the traits were present in an ancestor pre-dating beginnings of humans, and are still present today, then early humans would have had those traits. Analogy: similar trait due to similar selective forces, produced by convergent evolution (do NOT share a common ancestor with that trait) Example: Bats (type of mammal) and bluebirds (type of bird) fly, are small, and have light bones
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Linneaus described organisms by classifying them in a taxonomy based on similarities and differences. Taxonomy uses hierarchical sets of nested categories, from general to more specific. KINGDOM Animalia (animal) PHYLLUM Chordata SUBPHYLLUM Vertebrata (vertebrates) CLASS Mammalia (mammals) ORDER Primates (primates)
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CLASS Mammalia - reproductive strategy of few, usually live births; extensive postnatal care - associated with higher intelligence and greater capacity for learned behavior - differentiated teeth (different kinds of teeth) - skeletal structure capable of swift movement - ability to maintain constant body temperature
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ORDER Primates Very generalized order, whose essential
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Primate Intro 2010 - The Order Primates Why study primates?...

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