ANTH 1001 : Anthro 1000 2 11 14 Exam 1
Document Summary
States that there is no change in allele frequencies and genotype frequencies in a population or species over time if certain conditions are met. 5 conditions of the hardy-weinberg theorem: random mating, infinitely large population size, no natural selection, no mutation, no migration. Among disadvantageous mutations, those that are recessives will persist in a population/species at higher frequencies than mutations that are dominants. The reason being is that recessive alleles are masked from natural selection when in a heterozygous situation. Forces of evolution: mutation, gene flow, genetic drift, natural selection within population. Allelic variability increase increase increase increase decrease decrease between population increase (population become dissimilar) decrease(population become similar) Speciation occurs when one population within a species (actually or potentially) becomes reproductive isolated from other populations. Gene flow is blocked between population a and population b-d. The gene pools of a and b-d diverge from one another.
