EVPP 108 Lecture Notes - Lecture 26: Sexual Selection, Genetic Drift, Directional Selection

• School: George Mason University
• Department: Environmental Science and Public Policy
• Course: EVPP 108
• Professor: Kim Largen

Document Summary

Gene pool - the total genetic information available in a population. Full def: the total of all the allele of all the genes in a population for a single gene/the total of all the alleles that occur in a population. Allele frequency: the frequency that a certain allele appears in a population, may be a percentage or decimal, example: two forms of the a allele (a and a) If the(cid:396)e a(cid:396)e 20 ga(cid:373)etes a(cid:374)d 5 a(cid:396)e (cid:862)a(cid:863) the(cid:374) the allele f(cid:396)e(cid:395)ue(cid:374)cy fo(cid:396) (cid:862)a(cid:863) is . 25. Phenotype frequency: the total number of individuals with a particular phenotype divided by the number of individuals in the population, example: there are 20 plants in a population. If four are pink then the frequency of pink is . 20. Hardy-weinberg genetic equilibrium that allele frequencies tend to remain the same from generation to generation unless acted on by outside influences. Individuals never enter nor leave a population: no net mutations.