Genetics Final Spring 2007 pg 3

Genetics Final Spring 2007 pg 3 - Allele Population 1...

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e. all are equally common 19. In conducting a common garden experiment with ragweed plants from two populations you calculate phenotypic and genotypic variance estimates on plant height. What is the broad sense heritability of plant height in population 1? Variance Type Population 1 Population 2 Environmental 160.4 101.6 Additive Genetic 132.3 197.1 Dominance 61.2 91.3 Epistatic 18.9 21.2 a. 0.33 b. 0.42 c. 0.57 d. 0.62 e. 0.68 20. If population 2 has a mean height of 1400 mm and you selectively breed only plants that are 1 sd above the mean with a mean height of 1780 mm, calculate what the mean height will be in the next generation. a. 1400 b. 1497 c. 1582 d. 1621 e. 1780 21. You are studying gene flow between two genetically differentiated populations (allele frequencies shown below). The migration rate from population 1 into population 2 is 0.15 per generation and the migration rate from population 2 into population 1 is 0.08 per generation. After one generation of migration, how much will p differ between the two populations?
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Unformatted text preview: Allele Population 1 Population 2 p 0.64 0.29 q 0.36 0.71 a. 0.269 b. 0.343 c. 0.612 d. 0.700 e. 0.75 22. Which of the following regions of a DNA molecule would you expect to find the fewest base substitutions between two species? a. intron b. pseudogene c. exon d. 5 UTR e. 3 UTR 23. Which of the following reaction norms suggests that the size difference between two populations is due to genetic differences alone? a. b. c. d. e. 24. Which of the following describe the action of genetic drift in a large population? a. causes wide fluctuations in allele frequencies each generation b. the time to fixation of a neutral allele will take a longer time in a large population c. causes small fluctuations in allele frequencies each generation d. both a and b e. both b and c 25. Which of the following mechanisms of gene regulation is not found in prokaryotes? a. positive control b. negative control c. protein turnover d. differential splicing e. all of the above...
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