311DChap23a - Population Genetics How does a population...

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Population Population Genetics Genetics How does a population evolve?
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Outline Outline 1. Key Concepts 2. Individuals Don’t evolve, Populations Do 3. The Hardy-Weinberg Theorem 4. The Microevolution and Natural Selection 5. Genetic drift 6. Gene flow
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Key Concepts: Key Concepts: Individuals of a population have the same number and kinds of genes In a population, a gene may exist in different forms Microevolution means that changes have occurred in a population’s allele frequencies Allele frequencies can change through mutations, gene flow, genetic drift, nonrandom mating, and natural selection
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Individuals Don’t Evolve, Individuals Don’t Evolve, Populations Do Populations Do Population - Is a localized group of individuals that are capable of interbreeding and producing fertile offspring Polymorphism - traits come in two or more distinct forms Gene Pool - pool of genetic resources that, in theory, is shared by all members of the population
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Polymorphism
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A Gene Pool
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The Hardy-Weinberg Theorem The Hardy-Weinberg Theorem The Hardy-Weinberg Theorem : The frequences of alleles in the gene pool will remain constant unless acted by other agents This is a theoretical state in which a population is not
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This note was uploaded on 05/05/2008 for the course BIO 52030 taught by Professor Zhao during the Fall '07 term at University of Texas.

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311DChap23a - Population Genetics How does a population...

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