BI111 Lecture Notes - Lecture 5: Mendelian Inheritance, Genotype Frequency, Population Genetics
Document Summary
Each individual is diploid (2n) and is hermaphrodiic (can mate with anyone else), is a member of a populaion whose size is ixed. Therefore 46% chance of inheriing a small b . Therefore 54% chance of inheriing a large b . Random maing: a populaion maing system in which every female gamete has an equal opportunity to be ferilized by every male gamete. Assortaive maing: maing patern and a form of sexual selecion in which individuals with similar genotypes and/or phenotypes mate. Mathemaical model that predicts genotype frequencies: used as a null/control. All models have assumpions: random maing, large populaion size, no migraion/emigraion, no selecion. Is our populaion a hardy-weinberg equilibrium: calculate frequency. Allows us to make strong predicions of genotypes by random chance. If a populaion is in hardy-weinberg equilibrium, then it is not evolving and allele frequencies remain the same in each generaion. Gene flow: introducion of new geneic variaion. Natural selecion: change in frequencies of alleles.
