Chapter 5 Notes

Chapter 5 Notes - 9/13/11 Chapter 5 Populations and Gene...

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9/13/11 Chapter 5 Populations and Gene Pools Individuals do not evolve Genetic changes are passed from one generation to another within populations (populations evolve, not individuals) Populations are groups of individuals of the same species the occupy the same area A gene pool is the sum of all alleles for all traits in a population Sources of variation? o Crossing over, meiosis I, chromosomal …, independent assortment, mutations, random fertilization Population Genetics The study of genetic events in a population Hardy-Weinberg Theorem (equilibrium) describes changes in allelic frequencies in populations o Allele frequencies do not change from one generation to the next, if certain assumptions are met: (if not changing, then population is not evolving) o Assumptions The population must be large No immigration or emigration No mutations Reproduction must be random Natural selection does not occur If allele frequencies are changing, than a population is evolving (in
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This note was uploaded on 11/05/2011 for the course BZ 110 taught by Professor Karenraines during the Spring '08 term at Colorado State.

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Chapter 5 Notes - 9/13/11 Chapter 5 Populations and Gene...

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