BIOB 375 1st Edition Lecture 35 Outline of Last Lecture II. Quantitative geneticsIII. Qualitative traitsOutline of Current Lecture IV. Population GeneticsCurrent LecturePopulation Genetics- To study the genetic composition of groups of individuals of the same speciese, and how the composition changes over time and geographic space.Population genetics focuses on Mendelian population – which is a group of interbreeding, sexually reproducing individuals that have a common set of genesGene pool: all the genes, and their different alleles, present in an interbreeding, sexually reproducing population.How to characterize a gene pool? (normally, one gene locus at a time)- Genotypic frequency- Allelic frequencyHow to calculate genotypic frequencies?f(AA)= (number of AA individuals)/(total number of individuals)f(Aa)= (number of Aa individuals)/(total number of individuals)f(aa)= (number of aa individuals)/(total number of individuals)How to calculate allelic frequencies?F(an allele)= (number of copies of the allele)/(number of copies of all alleles at the locus)p=f(A)= (2nAA + nAa)/2Nq=f(a)= (2naa + nAa)/2NTo study the genetic composition of groups of individuals of the same species, and how the composition changes over time and geographic space Compare the genotypic and allelic frequencies among gene pools over
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