ANT 301 Lecture Notes - Lecture 8: Base Pair, Allele Frequency, Mutation
Document Summary
Natural selection recap from lab: heritable, variation in the trait, differential reproductive success based on the trait. Some individuals must survive and produce more offspring than others. Those individuals are said to have a higher fitness. Fitness relative measure of lifetime reproductive success. Dar(cid:449)i(cid:374) a(cid:374)d walla(cid:272)e (cid:272)ould(cid:374)"t e(cid:454)plai(cid:374) ho(cid:449) (cid:448)ariatio(cid:374) is (cid:373)ai(cid:374)tai(cid:374)ed (cid:894)ble(cid:374)di(cid:374)g i(cid:374)herita(cid:374)(cid:272)e(cid:895) Gregor mandal blending inheritance is wrong: green yellow pea example, noticed recessive traits, an individual has two particles controlling each discrete trait: one inherited from each parent. Particles = alleles: some traits mask others (dominants vs. recessive) Traits are discrete: basic rules of heritability. Variation is maintained from one generation to another: he did not know about dna. Big molecules in cells that contain genes. 1. 23% difference due to base pair subistuitions. 1. 5% of insertions of new material or deletion of old material. 97% identical to chimps: mandal explained how variation is maintained within a population over time.
