ecology quiz 6 - 1(Points 1 Which of the following...

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1. (Points: 1) Which of the following statements about genes and evolution is true? a. Evolution is the process by which the frequencies of alleles in a population change over time. b. Genes are composed of proteins. c. An individual?s genetic makeup is known as its genotype. d. Both a and b e. Both a and c Save Answer 2. (Points: 1) In the 1890s, the biologist Hermon Bumpus found that sparrows that had survived a Rhode Island storm were more likely to be of intermediate size than sparrows that had perished from the storm. This is most likely an example of a. genetic drift. b. disruptive selection. c. directional selection. d. stabilizing selection. Larose 1
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e. gene flow. Save Answer 3. (Points: 1) Genetic drift tends to _______ genetic variation within populations, and _______ genetic differences among populations. a. increase; increase b. increase; has no effect on c. increase; decrease d. decrease; increase e. decrease; decrease Save Answer 4. (Points: 1) Alleles resistant to organophosphate insecticides were introduced into Culex pipiens populations via _______; these alleles quickly became fixed via _______.
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This note was uploaded on 11/13/2009 for the course PCB PCB 3044 taught by Professor Woo during the Fall '09 term at University of Central Florida.

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ecology quiz 6 - 1(Points 1 Which of the following...

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