5. Microevolution and Measurement.ppt

5. Microevolution and Measurement.ppt - MICRO-EVOLUTION AND...

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1 MICRO-EVOLUTION AND HOW IT IS MEASURED A. MEASURING EVOLUTIONARY CHANGE 1. Breeding Population 2. Kinds of Natural Selection 3. Hardy-Weinberg Equation To Measure Evolution 4. Application of the Hardy-Weinberg Equation B. ADDITONAL SOURCE OF VARIABILITY 1. Mutation 3. Founder Effect 4. Genetic Drift INTERACTION OF MUTATION, FOUNDER EFFECT, GENETIC DRIFT TO PRODUCE VARIABILITY Founder Effect and Increased Frequency of MN Blood Type Founder Effect and the Genetic Traits of Tristan da Cunha Inhabitants Founder Effect, Genetic Drift and the Gene from Limone Mutation, Founder Effect and Genetic Drift: Huntington’s Disease Mutation, Founder Effect , Genetic Drift and Cultural Factors: Albinism MEASURING EVOLUTIONARY CHANGE Breeding or Gene Pool : The sum total of genes, with all their variations, possessed by a particular species at a particular time. Genes : The units of inheritance Alleles : Different versions of the same gene Genotype frequency : A measure of the relative proportions (percentage) of different genotypes within a population. Homozygous: Having the same allele at a given locus on a pair of chromosomes. Heterozygous : Having different alleles at a given locus on a pair of chromosomes.
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2 (a) Stabilizing (b) directional (c) disruptive Types of Natural Selection MEASURING EVOLUTIONARY CHANGE Hardy-Weinberg equilibrium equation to measure evolution Assuming p = dominant allele & q = the recessive allele In accordance with Mendelian inheritance the combined total frequency of p + q = 1 1. The frequency of dominant allele produced by a
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This note was uploaded on 11/18/2009 for the course ANTHRBIO 161 taught by Professor Mitani during the Spring '08 term at University of Michigan.

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5. Microevolution and Measurement.ppt - MICRO-EVOLUTION AND...

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