ANTH 101 Chapter Notes - Chapter 4: Point Mutation, Directional Selection, Capillary
Document Summary
Composed of all populations (and their individual members) that are capable of breeding with each other and producing viable (fertile) offspring. If two populations are reproductively isolated, members of one population cannot interbreed with members of the other. If two populations of the same species become isolated, such as by a mountain range or a large body of water, enough genetic differences could accumulate for two entirely different species to emerge. Change in gene frequency over a few generations. Substantial change over many generations-- creation of new species. 4. 2 hardy-weinberg law: testing the conditions of genetic equilibrium. Recognized some alleles are in a state of equilibrium. 4. 3 mutation: the only source of new alleles. Creates an altered triplet in the dna, but the alteration carries with it the original amino acid. Results in a matchup that brings along a different amino acid.
