BIOL150 Chapter Notes - Chapter 6: Mate Choice, Phenotypic Trait, Allopatric Speciation
20 Jul 2016
School
Department
Course
Professor
Document Summary
Hardy-wienberg equilibrium: natural selection is the only evolutionary process that causes adaptations only one which changes in allele frequency between generations reflect differences in relative fitness of individuals in a population. Mating is random population is large no net movement of individuals naturally, rarely met. 1968: 12 000 people died in guatemola due to a diarrhea epidemic from a bacterial strain that was harbouring a plasmid carrying resistance to 4 different antibiotics. Myotonic dystrophy in quebec 1/550 vs 1/50 000 evolutionary bottleneck: Movement of genes between populations as a result of migration immigration: into a population emigration: out of population. Metapopulations: groups of local populations of interbreeding individuals linked by movements of individuals barriers cause allopatric speciation. 4)non random mating: assortative (non random) mating: they choose mates non randomly based on a phenotypic trait or traits female mate choice; female bias towards a male similar in plants and fungi positive assortative mating:
