1. in an unstable equilibrium caused by underdominance that exists when allele p
ID: 201595 • Letter: 1
Question
1. in an unstable equilibrium caused by underdominance that exists when allele p 0.3, what will happen to allele p in future generations if the population starts at a frequency of p 0.2? (a) Allele p will go to fixation lele p will go to zero Allele p will return to a frequency of 0.3 and stay there ( Allele p will go to a frequency of 0.7 and allele q will go to a frequency of 0.3 (d) Allele p will g --. 16. In the absence of other evolutionary forces, migration will cause a allele frequencies to homogenize across populations b FST to go to 1 (C) FsT to go to 0 (d) a and b (e) a and o 17. Which of the following violations of Hardy-Weinberg equilibrium assumptions does not cause evolution? (a) Migration (b) Nonrandom mating c) Finite population size (d) Selection (e) Mutation 18. Genetic drift results from a violation of which Hardy-Weinberg equilibrium assumption? (a) random mating (b) infinite population size (c) lack of mutation (d) lack of migration (e) lack of natural selection 19 the most common type of nonrandom mating, will not change allelic frequencies, but it will change genotypic frequencies toward (a) Positive assortative mating, homozygosity b) Negative assortative mating, heterozygosity c) Inbreeding, homozygosity Migration, heterozygosity 20. In the absence of other evolutionary mechanisms, genetic drift will eventually a eliminate the genetic variation in a population increase the genetic variation in a population (c) have zero effect on the genetic variation of a population unless effective population size is very tiny (d) Increase average heterozygosity but decrease genetic variation in a populationExplanation / Answer
Ans 15 : b) Allele p will go to zero.
Since the equillibrium is unstable , and underdominance exists at the p allele frequency of 0.3 , and the future generations have the allel p frequency as 0.2 , so the allele p is likely to decrease.
It soon approaches to zero , as it keeps on decreasing.
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