Sexual selection often favors different mating tactics for each sex. In general : a) this can result in attempts of one sex to control mating
... [Show More] opportunities of the other sex. b) sexual selection shou ld favor the evolution of cooperative breeding. c) the sex that has more opportunities to mate is subject to strong sexual selection. d) alterative mating tactics persist evolutionarily because they offer superior fitness for the most competitive phentoypes. e) alterative mating tactics persist evolutionarily in systems where there are low environmental effects on sexually selected phenotypes. Question 2 Your answer is CORRECT. What is the most likely explanation for the evolution of elaborate traits such as bright colors, energetic displays, or cumbersome antlers, feathers, or exaggerated appendages with low functionality ? a) Strong epistasis among loci involved in means that the genotypes expressing these unfit phenotypes are recreated each generation. b) Sexually selected traits generally have higher heritabilities than other traits, and thus sexually selected traits respond more readily to selection than do other traits. c) The fitness gains produced by sexual selection on these traits outweighs the fitness loss they incur via natural selection. d) Heterzygote advantage among loci involved in means that the genotypes expressing these unfit phenotypes are recreated each generation. e) None of the above. Question 3 Your answer is INCORRECT. Which of the following is important for the Hamilton Zuk Hypothesis to explain the basis of mate choice based on a particular trait? Print Test https://www.casa.uh.edu/CourseWare2008/Root/Pages/CW/Use... 1 of 12 4/27/19, 11:49 AM a) An honest relationship between variation in the trait subject to sexual selection and measures of fitness unrelated to the trait (e.g., growth rate, competitive ability). b) That the choosey sex prefer individuals with particular values of the trait, but that the trait not relate to fitness in any other way. c) Stabilizing selection resulting from a compromise between natural and sexual selection. d) That the trait be an honest indicator of resistance to pathogens or parasites. e) None of the above. Question 4 Your answer is INCORRECT. The figure below shows the phylogenetic distribution for the independent appearance of a male trait and female preference for the trait. Given this, which of the following is true? a) Males in the ABC and DEF clades may be using sensory exploitation. b) Females in the ABC clade are using sensory exploitation. c) Males in the ABC clade may be using sensory exploitation. d) Mate choice does not occur in this clade. e) Sensory exploitation is not occuring. Question 5 Your answer is INCORRECT. Linkage disequilibrium for alleles controlling female preference and male display traits can be explained by a) kin selection opposing inbreeding. Print Test https://www.casa.uh.edu/CourseWare2008/Root/Pages/CW/Use... 2 of 12 4/27/19, 11:49 AM b) disruptive selection favoring divergent forms in allopatry. c) the loci controlling preference and trait expression existing across from a chromosomal inversion. d) antagonistic pleiotropy between recombination rate and fitness. e) None of the above. Question 6 Your answer is CORRECT. Which species concept runs the risk of defining species differently across environments? a) Biological species concept. b) Phenetic species concept. c) Ecological species concept. d) Evolutionary species concept. e) Phylogenetic species concept. Question 7 Your answer is INCORRECT. Sympatric speciation, where lineages in the same place diverge, : a) cannot occur under the phylogenetic species concept. b) sets the stage for peripatric or sympatric speciation, depending on the evolution of Dobzhansky-Muller incompatibilities. c) seems to require very specific genetic changes owing to hybridization, chromosomal rearrangements or rapid evolution of Dobzhansky-Muller incompatibilities that isolate subpopulations. d) requires the action of secondary reinforcement. e) none of the above. [Show Less]