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Practise Questions Jan. 2012 Key

Practise Questions Jan. 2012 Key - PRACTISE QUESTIONS BIOL...

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PRACTISE QUESTIONS BIOL 1001 W2012 Key The easier questions on here are not representative of test questions, but are to allow you to ensure that you understand the basics. If you don’t understand a question, I would suggest you talk to some friends about it. Please note the term trait and character are used interchangeably here. I do not have practice questions for the nature of science section; however, we did many questions about this in class and it has been brought up repeatedly since then. 1. Artificial selection is likely to produce population-level changes most quickly in organisms with: a. a small litter size. b. a short generation time. c. a large body size. d. a large genome. e. a long life span. 2. Malthus’s Essay on the Principle of Populations was key to both Darwin and Wallace’s formulation of a mechanism for evolutionary change. Which of the following statements best summarizes Malthus’s idea? a. Populations produce more offspring than their environment can support, resulting in competition for resources. b. Populations always produce less offspring than their environment can support, resulting in decreased competition. c. Populations of animals are able to pass to their offspring characteristics acquired in their lifetimes. d. On average, populations produce the number of individuals that their environment can support. e. Populations that are isolated cannot support themselves because they cannot generate resources. 3. Many crustaceans (e.g., lobsters, shrimp, and crayfish) use their tails to swim, but crabs have reduced tails that curl under their shells and are not used in swimming. This is an example of a. artificial selection. b. an extinction. c. an acquired characteristic. d. a vestigial trait. e. natural selection. 4. The upper forelimbs of bats (mammals) and birds (classified with reptiles) have fairly similar skeletal structures. However, bat wings have a thin flap of skin stretched between the bones of the fingers and the arm, while bird wings consist of feathers extended all along the arm. How would you describe these relationships? a. The forelimb skeletons of birds and bats are homologous, as are the wings. b. The forelimb skeletons of birds and bats are due to convergent evolution, whereas the wings are homologous. c. The forelimb skeletons of birds and bats are homologous, whereas the wings are due to convergent evolution. d. The forelimb skeletons of birds and bats are due to convergent evolution, as are the wings. 5. Which of the following is the best modern definition of evolution? a. descent without modification b. change in allele frequencies in a population over time c. survival of the fittest d. inheritance of acquired characters 6. How did Hutton & Lyell’s ideas influence Darwin’s thinking about evolution?
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