Let’s say that a large ancestral population of really cool organisms is subdivided, by a geological cataclysm, into a large number of isolated, ideal populations, each of size 100. Suppose we’re interested in an autosomal locus with two alleles, A and a, with p = the frequency of A = 0.75 in the ancestral population, as well as in each newly isolated population. Assume that genetic drift is the only evolutionary force operating. a) What is the average allele frequency of A in the populations after 5, 10, and 100 generations? b) What allele frequencies of A do you expect to find within each population at equilibrium, and what percentage of the populations will have each specific allele frequency? (recall various simulations we did/could do of genetic drift in several populations) c) What is the average Inbreeding Coefficient (or Fixation Index) F for each population after 20 generations? Assume F = 0 for all individuals in the ancestral population. d) Redo (c), assuming an initial allele frequency p = 0.45
Let’s say that a large ancestral population of really cool organisms is subdivided, by a geological cataclysm, into a large number of isolated, ideal populations, each of size 100. Suppose we’re interested in an autosomal locus with two alleles, A and a, with p = the frequency of A = 0.75 in the ancestral population, as well as in each newly isolated population. Assume that genetic drift is the only evolutionary force operating.
a) What is the average allele frequency of A in the populations after 5, 10, and 100 generations?
b) What allele frequencies of A do you expect to find within each population at equilibrium, and what percentage of the populations will have each specific allele frequency? (recall various simulations we did/could do of genetic drift in several populations)
c) What is the average Inbreeding Coefficient (or Fixation Index) F for each population after 20 generations? Assume F = 0 for all individuals in the ancestral population.
d) Redo (c), assuming an initial allele frequency p = 0.45
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