B1510F07_L10_speciation-1

B1510F07_L10_speciation-1 - Georgia Tech School of Biology...

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Biology 1510 Georgia Tech School of Biology Fall 2007 Forms of selection and Speciation Selection can be directional, stabilizing, and disruptive Examples (fruit flies, finches, not HIV ) Speciation what is a species? what drives speciation? on what time scales can this occur? examples
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Biology 1510 Georgia Tech School of Biology Fall 2007 Selection and Adaptation
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Biology 1510 Georgia Tech School of Biology Fall 2007 Selection in the Lab
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Biology 1510 Georgia Tech School of Biology Fall 2007 Natural Selection in the Wild
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Biology 1510 Georgia Tech School of Biology Fall 2007 Galapagos finches Medium ground finches on Daphne major Small population (~1200) Little migration Seed eaters – crack seeds with bills Beak size correlates with size of seeds eaten Geospiza fortis
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Georgia Tech School of Biology Fall 2007 Is there heritable variation in beak depth? Beak depth is a trait that is variable in the population, and birds with larger beaks are capable of feeding on larger and harder
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This note was uploaded on 04/07/2008 for the course BIO 1510 taught by Professor Unknown during the Fall '07 term at Georgia Institute of Technology.

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B1510F07_L10_speciation-1 - Georgia Tech School of Biology...

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