Quiz 15 Ch 15 Name________________________ Remote # ____________ 1. Selection against individuals at both a. kin selection ends of a phenotypic distribution for a b. sexual selection character, favoring those in the middle c. natural selection or average of the distribution, is an d. directional selection example of __________. e. disruptive selection a. kin selection b. sexual selection 4. What is a gene pool? c. directional selection a. a region of DNA found at a specific d. disruptive selection position on a chromosome e. stabilizing selection b. the number of copies of an allele for a specific gene in a population 2. The process by which two species c. the total number of all the genes in a evolve adaptations in response to one population another, such that evolutionary change d. none of the above in one species produces an evolutionary change in the other is called _______. 5. What is the Hardy-Weinberg a. coevolution principle? b. natural selection a. a model of population genetics that c. directional selection shows that evolution will occur if all of the d. balanced polymorphism conditions of the principle are met b. a model of population genetics that 3. Which of the following selective shows that evolution will occur if even one processes did Darwin suggest to explain of the conditions of the principle is violated the evolution of the conspicuous c. a model of population genetics that structures and courtship behaviors that describes how evolution occurs in nature d. Both the first and third answers are male animals use to attract a mate? correct. 1 6. Which phrase best describes the from each other concept of natural selection? d. makes populations more genetically similar a. survival of the fittest b. reproductive success 10. When populations get very small, c. long life the danger of losing genetic variability is d. Both the first and third answers high. This is called a ________________. are correct. a. endangerment 7. What type of natural selection favors b. population bottleneck individuals with rarely encountered traits c. population whiplash over individuals with traits that are d. DNA reduction frequently encountered? 11. Chance effects can change an a. disruptive selection allele’s frequency in a population. This b. stabilizing selection phenomenon is called _______________. c. directional selection 8. Evolution is best defined as a change a. DNA replication in __________. b. chance c. genetic bottleneck a. number of species d. genetic drift b. physical traits c. DNA sequence 12. ____________________ selection is a d. allele frequencies type of selection that favors individuals with average values of traits. 9. Gene flow __________. a. cannot influence the evolution a. Natural of a population b. Random b. prevents the spread of alleles c. Stabilizing through a species d. Specific c. causes populations to diverge 2