2 Evolution and Ecology 9-4-09

2 Evolution and Ecology 9-4-09 - Coyote with mange...

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Unformatted text preview: Coyote with mange Chupacabra? Sedalia (Mo) Democrat 8-28-09 Ecology 203 Overview Geographic Distributions Geographic Distributions Populations Communities Ecosystems Applications Gregg Hartvigsen Introduction Evolution and Ecology Overview Evolution and Ecology Behavioral Ecology Evolution and Ecology Gregg Hartvigsen Evolution = “… must involve a change in the frequency of individual genes in a population from generation to n ti n ” (K bs 2009 generation.” (Krebs 2009) Traits are often variable - exhibiting a distribution…. Growth rate of mice (3-6 wks) Litter size of mice Fruit flies ( Drosophila ) Changes in gene frequencies: Mutation Mutation Genetic Drift = random fluctuations of gene frequencies. Changes in gene frequencies: Mutation Mutation Genetic Drift Migration/Gene Flow = the change in genes due to the movement (immigration and emigration) of organisms carrying different genes. Changes in gene frequencies: Mutation Mutation Genetic Drift Migration/Gene Flow Natural Selection (“Adaptive...
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This note was uploaded on 07/11/2010 for the course BIO 209 taught by Professor Hartvigsen during the Spring '09 term at SUNY Geneseo.

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2 Evolution and Ecology 9-4-09 - Coyote with mange...

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