Test 1-Sample Questions

Test 1-Sample Questions - BIO150Y Sample Test 1 Questions...

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Copyright © 2009 BIO150, University of Toronto BIO150Y Sample Test 1 Questions – October 2009 1. To measure the Darwinian fitness of individuals it is necessary to: a. use neutral genetic markers to measure gene flow. b. determine the viability of species on islands and continents. c. compare genotypes in their viability and reproductive success. d. estimate the heterozygosity of individuals using electrophoresis. e. determine how many genes control a trait. 2. Exotic invertebrate species invasions in the Great Lakes, as discussed in the Bioscience article by Mills and colleagues, have largely occurred because of: a. increased water temperatures due to climate change. b. changes in water level in the Great Lakes. c. the dumping of water ballast by ships. d. reduced ice cover on lakes. e. the introduction of exotic fish by the aquarium trade. 3. What are the major differences between the Classical and Balance Schools concerning the genetic structure of wild populations? i. The two schools predict similar amounts of polymorphism but different levels of heterozygosity. ii. The Classical school predicts that most loci are monomorphic. iii. The Classical school predicts there is no common wild-type allele at each locus. iv. The Balance school predicts many more different alleles in a population. v. The Classical school predicts low levels of heterozygosity. a. i and iii b. i and v c. ii, iii and v d. ii, iv and v e. iv and v 4. Which of the following is NOT a consequence of population bottlenecks? a. Loss of rare alleles. b. Inbreeding depression. c. Fixation of deleterious alleles. d. Reductions in heterozygosity. e. Gene flow. 5. Which statement about natural selection is FALSE? a. It favours individuals that are better adapted to future environmental conditions. b. It acts on differences between individuals rather than differences between populations. c. It can result in gradual phenotypic changes over long periods of evolutionary time. d. It can change in strength and direction with changes in the environment. e. It is an impersonal, mechanistic, and amoral process.
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Page 2 of 6 Copyright © 2009 BIO150, University of Toronto 6. Which statements accurately describe phenotypic plasticity? i. It results from changing environmental conditions. ii. It is well developed in mobile organisms that confront different environments. iii. It enables measurement of natural selection in transplant studies. iv. It can be an adaptation that has evolved by natural selection. v. It is a characteristic of individuals and therefore not under genetic control. a. i and ii b. ii and iii c. i and iv d. iii and v e. iv and v 7. Which of the following conditions are required for allopatric speciation? i.
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This note was uploaded on 11/24/2010 for the course BIO BIO150Y1Y taught by Professor Barret,thomson during the Spring '07 term at University of Toronto.

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Test 1-Sample Questions - BIO150Y Sample Test 1 Questions...

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