ANTH 203 Lecture Notes - Lecture 8: Allele Frequency, Gene Pool, Genetic Drift
13 Jun 2016
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Document Summary
Microevolution is the change in allele frequency and distribution over time within a population of a species. Macroevolution is the same change at or beyond the species level and across multiple populations. Population genetics is the study of this change. What are the factors that influence the distribution and frequency of alleles in a population: mutation, natural selection, sexual reproduction, genetic drift, gene flow (migration) Gene pool is a pooled" combination of the different alleles (b and b) in a given population of a species. Pooling genotypes helps us more easily compare genetic populations of varying sizes. 7 boars; their genotypes are bb, bb, bb, bb, bb, bb, bb. The genotype proportion is represented as a fraction of the total number of alleles; b = 7/14 = 0. 5. b = 7/14, 0. 5. This is to compare populations smaller or larger. Most common and practical definition is a population of individuals capable of mating and producing fertile offspring.
