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@Lecture12_9 - PALEOBIOLOGY Galapagos Islands 5ma Evolution...

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1 1 Fall 2009, GEL 107: Lecturer 12 PALEOBIOLOGY 2 Evolution 3 What are the two core mechanisms of evolution? What are micro- and macroevolution? What are typical examples of evolution? What is the link between micro- and macroevoltuion? Are micro- and macroevolution different? Questions 4 Galapagos Islands 5ma 5 Darwin’s Finches 2.3 ma 15 species 6 Marine Iguana ( Amblyrhunchus ) Land Iguana ( Conolophus ) 10-20ma 7 Evolution of whales 8 Evolution of birds 9 Classical example of convergence elipsis thunniform vertebrates Tunas Lamnid sharks Cetaceans Ichthyosaurs
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2 10 Bird Bat Pterosaur 11 Artificial selection can work 12 What are the two core mechanisms of evolution? What are micro- and macroevolution? What are typical examples of evolution? What is the link between micro- and macroevoltuion? Are micro- and macroevolution different? Questions 13 Simplistic visualization of shape space Starting shape variation 14 Mutation Simplistic visualization of shape space Expanded shape variation due to mutations 15 Mutation Selection Simplistic visualization of
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