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The genotype that would eventually predominate in the

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Unformatted text preview: The genotype that would eventually predominate in the gene pool is: a) genotype-selfish-guy b) genotype-nice-guy c) initially genotype-selfish-guy will begin to accumulate in the gene pool but eventually genotype-nice-guy will predominate d) initially genotype-nice-guy will begin to accumulate in the gene pool but eventually genotype-selfish-guy will predominate e) none of these choices. 15) A small population of Ding-bats consists of only 5 individuals. Their genotypes at the C-locus are listed below: C 1 C 2 , C 2 C 2 , C 1 C 1 , C 1 C 1 , C 1 C 2 The frequency of the C 1-allele in the gene pool is : a) 10%; b) 20%; c) 40%; d) 60%; e) none of these choices. 16) Consider the life cycle of the HIV virus. The drug ΑΖΤ influences which step in the life cycle? a) copying of HIV’s DNA into RNA d) the protease reaction b) copying of HIV’s RNA into DNA e) entry of the virus into the cell. c) integration of the HIV chromosome into the host’s chromosomes 17) The HIV virus adapts to AZT by: a) Preferentially using thymidine (T) instead of AZT during reverse-transcription; b) evolving to evade the “protease/cocktail” therapy of drugs c) Integrating into more locations in the helper-T cell’s genome d) Evolving to bypass the reverse-transcription process e) Evolving to using a different receptor to enter helper-T cells. 18) Compared to other pathogens, the major reason that HIV is not eliminated by the human immune system is: a) HIV reproduces rapidly because of its fast generation time d) HIV is too small b) HIV evolves rapidly because of its high mutation rate e) none of these choices. c) HIV does not induce antibodies; 14) Consider an asexual, annual animal species. Two genotypes that affect survival are present in the gene pool. The first genotype ( genotype-nice-guy ) is good for the species as a whole because it produces altruistic behavior (i.e., behavior that aids others at the expense of one’s own survival or fecundity). These individuals selflessly attack predators to defend their companions. The second genotype ( genotype-selfish-guy ) causes selfish behavior (i.e., cheaters who benefit from defense against the predator by others but these individuals do not help in the group’s defense). Individuals expressing genotype-nice-guy have a survival rate of 50% and those expressing genotype-selfish-guy have a survival rate of 75%. Fecundity among all surviving genotypes is identical. The genotype that would eventually predominate in the gene pool is: a) genotype-selfish-guy b) genotype-nice-guy c) initially genotype-selfish-guy will begin to accumulate in the gene pool but eventually genotype-nice-guy will predominate d) initially genotype-nice-guy will begin to accumulate in the gene pool but eventually genotype-selfish-guy will predominate e) none of these choices....
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The genotype that would eventually predominate in the gene...

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