HWE_Practice - 1. Population Genetics Practice A...

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Unformatted text preview: 1. Population Genetics Practice A large population of bluegill (a freshwater fish) was observed over ten consecutive summers. When traits were compared for the bluegill population, researchers noticed that about 36% of each generation showed small lips, which is believed to be a recessive trait. Use this information to answer the following questions: a) What is the estimated frequency of the small ­lipped allele the population? b) What proportion of the population is heterozygous for the trait? c) What proportion of the population is homozygous dominant for the trait? d) What attributes (conditions) must the population possess in order for the frequency of the small lips phenotype to remain stable for ten generations? 2. Suppose in a hypothetical population, the blood type of 1000 random individuals was sampled and the following genotypes were determined: Blood Genotype AA AB BB Number of Individuals 100 600 300 a) What is the frequency of the A allele in this population? b) What is the frequency of the B allele in this population? c) Is this population in Hardy ­Weinberg Equilibrium? Explain d) How many individuals of the next generation would you expect to have the AB genotype, if 4000 randomly chosen individuals were sampled? e) How many individuals of the next generation would you expect to have the O phenotype, if 4000 randomly chosen individuals were sampled? ...
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