BIOL 1200 Midterm: Exam 1 Study Guide Part 2
Document Summary
What is the agent of selection: natural selection to a new environment. If a bacterium is resistant to antibiotics, it will be favored to reproduce. Define microevolution: microevolution: change in allele frequencies over a short time within a population. Review the medium ground finch study discussed in lecture (and text). What are the sources of genetic variation: mutation, gene flow, sex. What is a gene pool: the stock of different genes in an interbreeding population. Did hardy and weinberg work as a team: genotypic and allele frequencies don"t change from generation as long other evolutionary factors are not present. What assumptions (conditions) must be met: if the allele frequencies don"t change or are near the expected values, random mating, no natural selection, no gene flow, extremely large population size (no genetic drift), no mutation. Why is h-w equilibrium characterized as the null hypothesis of population genetics: because it tests whether evolution or nonrandom mating is occurring for a particular gene.
