091407_PopulationGenetics2

091407_PopulationGenetics2 - 9/14/2007 Intro to Organismal...

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9/14/2007 1 Intro to Organismal Biology 9/14/07 Announcements 2 1. Quiz 1 next Wednesday 9/19 in class 2. Please bring laptops to lab next week Today’s class The Modern Synthesis Population genetics Microevolution Hardy-Weinberg Theorem (Relevant reading: Ch. 23) 4 The Modern Synthesis Modern synthesis : brought together genetics and evolution under one theory in 1920’s - 1950’s 5 Change in genetic makeup of a population from generation to generation Microevolution 6 Natural selection acts on individuals , but only a population can evolve . 7
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9/14/2007 2 Population genetics What is a population? Localized group of individuals capable of interbreeding and producing fertile offspring 8 Population genetics Gene pool : all the alleles in a population at any given time Gene flow : Exchange of genes between populations 9 Population genetics Population genetics: study of changes in the genetic makeup of a population Hardy and Weinberg in 1908 independently developed a way to study population genetic changes:
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091407_PopulationGenetics2 - 9/14/2007 Intro to Organismal...

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