Module 7 notes - Module 7 notes Hardy-Weinberg o The gene...

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Module 7 notes Hardy-Weinberg o The gene pool Evolutions is a change in the genetic makeup of a pop The total of all the genetic variation in a pop is the gene pool o Allele and genotype frequencies Individuals have the phenotypes and genotypes populations have distributions of phenotypes, genotypes, and alleles We calculate these as frequencies Genotype frequency Number of individuals with genotypes/total number of individuals in population Allele frequency Number of copies of allele in population/total number of copies of all alleles in population For a system with two alleles, p+q=1 Sum of the genotype frequencies always equals 1 o Hardy-Weinberg equilibrium A way of describing allele and genotype frequencies in a population that does change (no evolution) Assumes: no mutation, no migration, no selection, infinitely large population, random mating P^2+2pq+q^2=1 P^2- frequency of homozygous dominants 2pq-frequency of heterozygotes q^2-frequency of homozygous recessives using punnet squares for HWE likelihood of a gamete carrying a particular allele based on their

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