11.12.09_DiscHmwk

11.12.09_DiscHmwk - and no selection to predict the...

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Intro Bio 151/153 Discussion Homework; week of 11/16-11/20 Name: Josh Litwicki Discussion Section #: 609 INSTRUCTIONS: Complete these questions before coming to discussion, and bring them with you to discussion. These questions will be graded for completeness . Hardy-Weinberg Learning Goals Learning Goal 1: Understand how to calculate allele frequencies from genotype frequencies. Appreciate that this is just a calculation and requires no assumptions (except that the genotype frequencies are correctly measured!) 1) A population contains the following numbers of individuals of the three genotypes AA, Aa, and aa, respectively: 720, 480, 800. What is the frequency of the a allele? 2) The frequency of frogs with genotype RR in a population is 0.25 and the frequency of the R allele is 0.49. What is the frequency of Rr heterozygotes? Learning Goal 2: Understand how to use the Hardy-Weinberg assumptions (especially random mating
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Unformatted text preview: and no selection) to predict the genotype frequencies in the next generation from the allele frequencies. 3) If a population with a frequency of allele A1 = 0.2, and A2 = 0.8 is in Hardy-Weinberg equilibrium, what is the frequency of A1A2 heterozygote? 4) The allele W conferring red flowers is dominant to the allele w causing white flowers. If allele W is at frequency 0.7 in a population, what is the expected frequency of red flowered plants given random mating? 5) A population of 10,000 individuals contains two alleles at the GLABROUS locus (G/g), with GG and Gg plants being hairy and gg plants being glabrous. 2944 individuals are hairy. Assuming the population is in Hardy-Weinberg equilibrium, the numbers of individuals in the GG and Gg classes, respectively is. ..?...
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