BIO305_F06_ZHANG_TZFIRA_PracticeExam2 - 1 The practice...

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1 The practice problems do NOT cover all the topics that will appear in the real exam 1. Which statement about heritability is INCORRECT? a) The heritability of a trait may be different for a given population at different times. b) Zero heritability for a trait in a given population indicates that there is no variation within the population for that trait. c) Narrow-sense heritability can be measured by the degree of resemblance between parents and kids. d) Heritability cannot be higher than 1. e) Heritability is often 0 for any traits measured in a highly inbred line. f) Artificial selection of a trait may reduce the heritability of the trait. 2. The Hardy-Weinberg law is NOT applicable if a population a) is not large. b) has no mutation. c) has no migration. d) has no genetic drift. e) has no inbreeding. f) is not subject to selection. 3. The frequencies of the I A , I B , and I O alleles are 0.5, 0.4, and 0.1, respectively, at the ABO blood group locus in a Russian population. If the population is under the Hardy-Weinberg equilibrium, the expected frequencies of the A, B, AB, and O phenotypes are a) 0.25, 0.16, 0.4, and 0.01 b) 0.25, 0.16, 0.58, and 0.01 c) 0.35, 0.24, 0.4, and 0.01 d) 0.35, 0.24, 0.29, and 0.1 e) 0.5, 0.4, 0, and 0.1 f) 0.25, 0.16, 0.49, and 0.1 4. The human population has a long-term effective size of 10,000, despite the fact that the current census size is over 6 billion. This is because human populations went through one or more bottlenecks in the past. To understand how bottlenecks affect the effective population size N e, please compute the effective size of a population over 100 generations, during which the census size was 10 for one generation, and 1 million for 99 generations. N e is approximately
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2 a) 1 million b) 100,000 c) 10,000 d) 1,000 e) 100 f) 10 5. The size of tomato is a quantitative trait. A highly inbred line has a mean tomato size of 20 grams and a standard deviation of 2.5 grams.
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This note was uploaded on 12/12/2010 for the course BIOL 305 taught by Professor Zhang during the Fall '10 term at University of Michigan.

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BIO305_F06_ZHANG_TZFIRA_PracticeExam2 - 1 The practice...

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