mar0310 - put ones genes in the next generation This can be...

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What is the modern synthesis? How do we defne evolution? Modern Synthesis 1 Sunday, March 7, 2010
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Questions What are the four forces of evolution? How does each change gene frequencies within and between populations? What is a population? What are Macroevolution and Microevolution? 2 Sunday, March 7, 2010
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Four Forces and Populations Within Between Mutation Genetic Drift Natural Selection Gene Flow = 3 Sunday, March 7, 2010
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Natural selection differential reproductive success over multiple generations some variations are more successful than others, leading to a change in the entire population over time 4 Sunday, March 7, 2010
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Natural Selection 5 Sunday, March 7, 2010
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6 Sunday, March 7, 2010
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Stabilizing selection 7 Sunday, March 7, 2010
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Directional Selection 8 Sunday, March 7, 2010
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Pepper Moths 9 Sunday, March 7, 2010
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Adaptation? An adaptation is an evolved phenotypic trait that increases an organism’s reproductive success? Examples? 10 Sunday, March 7, 2010
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Success measured as Fitness Success in natural selection is the ability to
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Unformatted text preview: put ones genes in the next generation This can be directly or indirectly Those who put more genes into the next generation are more ft than others 11 Sunday, March 7, 2010 Effects on Fitness Own reproduction survivorship health sexual opportunities sexual selection Reproduction of relatives kin selection 12 Sunday, March 7, 2010 Sexual selection 13 Sunday, March 7, 2010 Kin selection 14-helping kin helps own genes-Vervet alarm calls-Chimp patrols- bees or ants Sunday, March 7, 2010 Relatedness 15 Sunday, March 7, 2010 Four Forces and Populations Within Between Mutation Genetic Drift Natural Selection Gene Flow = 16 Sunday, March 7, 2010 MICROEVOLUTION = the small changes in gene frequencies in a population from generation to generation 17 MACROEVOLUTION = the cumulative effect of these small changes over a long period of time - may lead to SPECIATION Sunday, March 7, 2010...
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mar0310 - put ones genes in the next generation This can be...

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