probset2_sum07

probset2_sum07 - this population in Hardy-Weinberg...

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Biological Sciences 106 Fall 2006 NAME_________________________________________; TA/SECTION_________________ "I pledge on my honor that I have not given or received any unauthorized assistance on this assignment/examination." Signature: ________________________ Problem Set 2: Population Genetics. 20 pts. Due in LECTURE Wednesday, Aug 8 . An answer key will be posted so no late assignments will be accepted . 1. In a sample of 500 tiger lilies, three genotypes occurred in the following numbers. Calculate the genotypic and allele frequencies. Genotype AA Aa aa Numbers 320 90 90 2. In a large population of ruby-throated hummingbirds, it was observed that the frequency of allele H was 0.4 and the frequency of allele h was 0.6. Calculate the expected Hardy-Weinberg equilibrium genotype frequencies. 3. In a sample of 100 Hawaiians, it was found that 35, 20, and 45 individuals had blood groups MM, MN, and NN, respectively. Calculate the allele frequencies and the expected Hardy-Weinberg genotypic frequencies. Is
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Unformatted text preview: this population in Hardy-Weinberg equilibrium? Biological Sciences 106 Fall 2006 4. In Lop-eared rabbits, about 1 in 1000 has curly hair rather than straight hair; curly hair being due to a recessive gene. What is the proportion of curly alleles in the population? What are the frequencies of homozygous straight hair and of heterozygous straight hair individuals in this population? Assume that the population is in Hardy-Weinberg equilibrium! 5. In a population of bark beetles in Minnesota, the following genotypes are observed: AA (feeds under bark) 0.6 Aa (feeds on top of bark) 0.1 aa (feeds on leaves) 0.3 What are the allele frequencies and expected genotypic frequencies? Explain. Is the population in H-W equilibrium? (NOTE: You do not need to analyze this statistically. Make a judgment based on the proportions). List several biologically valid reasons why the observed population may not be in equilibrium....
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probset2_sum07 - this population in Hardy-Weinberg...

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