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PopGen_Problems2 - BLY302 GENETICS FALL 2010 POPULATION...

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POPULATION GENETICS PROBLEM SET 2 1. Given population genotype frequencies A 1 A 1 = 0.14, A 1 A 2 = 0.40, and A 2 A 2 = 0.46, what is the frequency of the A 1 allele in the population? Assuming no selection, random genetic drift, migration, or mutation affects the alleles at this locus, what is the expected frequency of A 2 in the next generation? 2. Consider a population in which 36% of the people exhibit a trait due to a homozygous recessive mutation. What is the allele frequency for the dominant allele if a population in in HWE? BLY302 GENETICS FALL 2010 1
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3. In the plant Lotus corniculatus , cyanogenic glycoside protects the plant against insect pests and even grazing by cattle. This glycoside is due to a simple dominant allele. A population of L. corniculatus consists of 77 plants that possess cyanogenic glycoside and 56 that lack the compound. What is the frequency of the dominant allele responsible for the presence of cyanogenic glycoside in this population?
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