GEL 107 (10)

GEL 107 (10) - GEL107: PALEOBIOLOGY What are typical...

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1 GEL107: PALEOBIOLOGY Lecture 11: Evolution І What are two core mechanisms of evolution? What are micro- and macroevolution? Are micro- and macroevolution different? What are typical examples of evolution? What is the link between micro- and macroevolution? Galapagos Islands 5ma Darwin’s Finches 2.3 ma 15 species Marine Iguana ( Amblyrhunchus ) Land Iguana ( Conolophus ) 10-20ma Evolution of whales Pakicetus Ambulocetus Dorudon Mysticeti Odontoceti
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2 Evolution of birds Classical example of convergence … thunniform vertebrates Tunas Lamnid sharks Cetaceans Ichthyosaurs Bird Bat Pterosaur Artificial selection can work What are two core mechanisms of evolution? What are micro- and macroevolution? Are micro- and macroevolution different? What are typical examples of evolution? What is the link between micro- and macroevolution? Simplistic visualization of shape space Starting shape variation
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3 Mutation Simplistic visualization of shape space Expanded shape variation due to mutations Mutation Selection Simplistic visualization of shape space Evolution has produced many varieties of
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This note was uploaded on 12/13/2009 for the course GEL GEL 107 taught by Professor Jishin during the Spring '09 term at UC Davis.

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GEL 107 (10) - GEL107: PALEOBIOLOGY What are typical...

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