10 Jun In a population of 50 diploid individuals, the frequencies
Question
1) In a population of 50 diploid individuals, the frequencies of alleles B and b are 0.8 and 0.2 respectively. Assuming Hardy-Weinberg equilibrium, what is the frequency of heterozygotes?
0.16
0.48
032
0.56
2) In the above population of 50 individuals, what is the expected frequency of heterozygotes after five generations, given the action of genetic drift only, assuming that the population is initially at Hardy-Weinberg frequencies?0.14
0.28
0.30
0.15
3) Consider a locus with allelesB andb. If the mutation rate fromB tob is 0.86*10^-3 mutations per generation and the mutation rate fromb toB is 0.47*10^-3, what is the expected equilibrium frequency ofb in a large isolated population, assuming the alleles have equal fitness?
0.38
0.76
0.65
0.19
4) A gene has two alleles B and b. The homozygote bb has 2% lower fitness than the homozygote BB. If allele frequency of B is initially 0.031, and Bdisplays complete dominance over b, what is the expected change in the allele frequency of B in the next generation, assuming a large population initially at Hardy-Weinberg frequencies?2.9*10^-4
3.5*10^-4
5.9*10^-4
4.7*10^-3
5) At a particular locus, a mink population has two alleles B and b that determine fur colour. Allele B is dominant over allele b. B codes for dark fur whereas bcodes for light fur. In the population, the frequency of allele B is initially 0.6 and the frequency of allele bis initially 0.4. Assume that the population is initially at Hardy-Weinberg equilibrium at this locus. What is the expected genotypic frequency of Bb in the initial population?0.32
0.48
0.24
0.16
6) At a particular locus, a mink population has two allelesB andb that determine fur colour. AlleleB is dominant over alleleb.B codes for dark fur whereasbcodes for light fur. In the population, the frequency of alleleB is initially 0.25 and the frequency of alleleb is initially 0.75. Assume that the population is initially at Hardy-Weinberg frequencies at this locus. If dark fur is selected for in the population, and individuals with light fur have a survival rate 25% lower than that of individuals with dark fur, what will be the frequency of the alleleA in the next generation?0.47
0.40
0.29
0.24
?7) At a particular locus, a mink population has two alleles B and b that determine fur colour. Allele B is dominant over allele b. B codes for dark fur whereas bcodes for light fur. In the population, the frequency of allele B is initially 0.25 and the frequency of allele b is initially 0.75. Assume that the population is initially at Hardy-Weinberg frequencies at this locus. If dark fur is selected for in the population, and individuals with light fur have a survival rate 47% lower than that of individuals with dark fur, what will be the frequency of the homozygous recessive genotype in the next generation?0.41
0.04
0.81
0.08
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