BIOL 202 Lecture Notes - Lecture 12: Allele Frequency, Population Genetics, Allele
9 Feb 2018
School
Department
Course
Professor
Document Summary
Population genetics is a quantitative field and uses models to abstract biology to the important details. Illustrated with gene pool model diagrams (this class assumes that mating is random and does not rely on certain traits being more prized than others in a population: 3 circles. Generation t+1: dots: different alleles of the gene pool. Allele frequencies remain constant in a population when evolutionary forces are not present: ex: after one generation of random mating in the absence of evolutionary forces the frequencies of genotypes will be: These do not change if there is no evolutionary forces and mating is random. It takes 1 generation for hardy-weinberg allele frequencies to appear when a hardy-weinberg situation is put in place. This means that variation is not blended out of the population. Based on this, we can calculate the expected frequencies of carriers and non- Q = (q2)0. 5 = (0. 0004)0. 5 = 0. 02.
