311DCh23 - Ch. 23 pg 468-486 Microevolution change in the...

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Ch. 23 pg 468-486 Microevolution – change in the genetic makeup of a population from generation to generation Population genetics – the study of how populations change genetically over time Modern synthesis – a comprehensive theory of evolution that integrated ideas from many other fields Population – localized group of individuals that are capable of interbreeding and producing fertile offspring Gene pool – total aggregate of genes in a population at any one time; consists of al alleles at all gene loci in all individuals of the population Hardy-Weinberg theorem – describes gene pools that are not evolving – the frequencies of alleles and genotypes in a population’s gene pool remain constant from generation to generation, provided that only Mendelian segregation and recombination of alleles are at work. Also describes how Mendelian inheritance preserves genetic variation from one generation to the next. Conditions for Hardy Weinberg Equilibrium: 1. Extremely large population size Smaller pop = greater role-played by chance fluctuations in allele freq. From one generation to the next, excluding natural selection– genetic drift 2. No gene flow – transfer of alleles between populations that results from the movement of fertile individuals or gametes
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This note was uploaded on 02/01/2011 for the course BIO 311D taught by Professor Reichler during the Spring '08 term at University of Texas at Austin.

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311DCh23 - Ch. 23 pg 468-486 Microevolution change in the...

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