What are allele frequencies of b and b in this population

Reference no: EM133423665

Questions:

1) The b allele causes arthritis in homozygous recessive individuals. If the frequency of normal (BB or Bb) people in a population is 80%, then what is the frequency of the recessive b allele?

2) In a population of 200 crickets from a population with two alleles at a locus for coloration: black (B) and brown (b). There are 28 individuals with the BB genotype, 152 individuals with the Bb genotype, and 20 individuals with the bb genotype. What are the allele frequencies of B and b in this population? Is it in Hardy-Weinberg equilibrium? Note - if the Chi Square test shows a calculated value of less than 3.84, the result is not significant. Show your calculations. Are your results consistent with some form of selection? If so, what type?

3) A population of flies has two alleles affecting size. The allele frequencies are Z = 0.2 and z = 0.8. The viability (survival) of the 3 genotypes are: ZZ = 0.9, Zz = 0.4, zz = 0.8. What is the relative fitness of each genotype? What is the equilibrium point at which both alleles are maintained in the population? Is it stable or unstable? Is the population currently at the equilibrium point? What will the final equilibrium frequencies be in this population?

4) Ankylosus is a disease produced by a mutation that occurs at a rate of 10-5/per generation. Individuals that inherit one copy of this mutation are not affected by it, but individuals that inherit two copies do not survive to reproduce. What would you expect the frequency of this mutation to be in a population at equilibrium between mutation and selection? If the frequency of the ankylosus allele is 0.001 in one generation, what will its frequency be in the next generation?

Please show the work for the answers

Reference no: EM133423665

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