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BS 110 Notes 10-8-2010 - BS 110 Notes Population Genetics...

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BS 110 Notes 10-8-2010 Population Genetics – field that emerged from the synthesis of Darwinian Evolution and Mendelian Genetics Population – group of interbreeding individuals of the same species that are located in space and time Population Geneticist – studies gene pools and if the gene pool changes from one generation to the next and why. Hardy-Weinberg Equilibrium Under certain conditions, allele/gene frequencies and gentotype frequencies remain the same from one generation to the next in populations of sexually reproducing species Ear size in Mice B>b o Parent population 49 BB, 42 Bb, and 9 bb o Offspring 49 BB, 42 Bb, and 9 bb Mutations not occurring Net movements of individuals not occurring population is large enough to not be affected by random changes in gene frequencies Mating is random Natural selection is not occurring Equilibrium is expressed by two equations o P + Q = 1 P = frequency of dominant allele Q = frequency of recessive allele o P^2
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