origin_of_species[1] - "That mystery of mysteries The...

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1 "That mystery of mysteries .... " The origin of species I. Macroevolutionary processes A. Microevolution B. Macroevolution II. Species concepts A. Similarities and differences between species B. Biological species C. Ecological species III. Allopatric speciation A. A definition IV. Sympatric speciation V. Adaptive radiations Microevolution Natural selection • Mutation • Migration Genetic drift Darwin and the “Origin of Species” “…. that mystery of mysteries - the first appearance of new beings on this earth.” Macroevolutionary questions 1. How are new species created? 2. How do species change over time? Similarities & differences between species
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2 Chimpanzees Gorillas Similarities No tail No tail Knuckle-walkers Knuckle-walkers Intergroup aggression Intergroup aggression Chimpanzees Gorillas Differences Use tools No tool use Small body size Large body size Large testes Small testes Male gorilla Male chimpanzee brain & testes Species are real
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3 Biological species
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