BIOA02H3 Chapter 22: Chapter 22 notes
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BIOA02H3 Full Course Notes
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22. 1: natural selection: the differential contribution of offspring to the next generation by various genotypes belonging to the same population. To explain the origin and maintenance of genetic variation. To explain the patterns and organization of genetic variation. To understand the mechanisms that cause changes in allele frequencies in populations gene pool: all of the different alleles of all of the genes existing in all individual of a population. The genetic structure of a pop. does not change over time if certain conditions exist : If an allele is useless its frequency will not increase even though its dominant. mating is random population size is infinite. There si no mgiration either into or out of the pop. there is no mutation. There is no change to alleles a and a, and no new alleles are added to change the gene pool natural selection does not affect the survival of particular genotypes.
