BIOL 190 Lecture Notes - Lecture 23: Snow Goose, Histocompatibility, Deodorant

• School: University of San Diego
• Department: Biology Courses
• Course: BIOL 190
• Professor: Leavitt, Dean

Document Summary

Five items that change genetic ratios in a population. Hardy weinberg equation: p^2 + 2pq + q^2, ww ww ww. If this equation does not hold true, at least one of the ve items for genetic ratio change in a population is present. In our class, 25% have no palmaris longus (pp) using p^2 + 2pq + q^2: q= . 5, p + q = 1, so p=. 5 (pp or pp) so 2pq = 2(. 5)(. 5) = . 5. Hardy-weinberg law (1908: under modal assumptions , a gene pool will have, constant allele frequencies, predictable and constant genotype frequencies throughout the life cycle. If gene pool meets these requirements, evolution is not present. Using allelic frequencies to determine genotypic frequencies of next generation: phenotype equation is simply p + q = 1, with random mating, genotypic frequencies will always be determined by p^2, q^2, 2pq. Statistically compare expected genotype frequencies to observed with a chi-square goodness-of- t test.