352_Outline12_S11 - Biology 352 Lecture 12 LECTURE 12:...

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Biology 352 Lecture 12 Spring 2011 1 LECTURE 12 : Nonrandom Mating I. Last Time. A. The Hardy Weinberg Principle. B. The conditions of the Hardy-Weinberg equilibrium. II. Nonrandom Mating -- an evolutionary force. A. What is "random mating?" B. Nonrandom mating: deviations from random mating. 1. Deviations due to phenotypic resemblance. a. Positive assortative mating. b. Negative assortative mating. 2. Deviations due to genetic relatedness. a. Inbreeding. b. Outbreeding. C. Effects can be similar. 1. Both positive assortative mating and inbreeding increase homozygosity. 2. Both negative assortative mating and outbreeding increase heterozygosity. 3. Genotype frequencies are changed, but allele frequencies are not. D. Effects can be different. 1. Assortative matings only disrupt HWE when phenotype and genotype are closely related.
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Biology 352 Lecture 12 Spring 2011 2 2. Assortative matings only disrupt HWE for genes associate with the trait. III. Inbreeding: A Detailed Look. A. Causes of inbreeding.
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This note was uploaded on 05/07/2011 for the course BIOLOGY 352 taught by Professor Townsend during the Spring '08 term at San Diego State.

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352_Outline12_S11 - Biology 352 Lecture 12 LECTURE 12:...

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