BI111 Chapter Notes - Chapter Part #2: Genotype Frequency, Random Effects Model, Genetic Drift
Document Summary
Following and measuring change in that variation over time is key to understanding the genetic basis of evolution. Evolution is a change in allele or genotype frequency over time: There is such thing as evolution without allele frequency change. Evolution is therefore a change in the genetic makeup of a population overtime. Any change in allele frequencies, genotype frequencies, or both constituted evolution. The hardy-weinberg equilibrium describes situations in which allele and genotype frequencies do not change: Allele and genotype frequencies change over time only if specific forces act on the population. The hardy-weinberg equilibrium describes the situation in which evolution does not occur. In the absence of evolutionary forces, allele and genotype frequencies do not change. In order to determine the evolutionary forces are at work or not we need to determine if the population is at equilibrium. Population at equilibrium meets these conditions: there can be no differences in the survival and reproductive success of individuals:
