(a) The graphs above show the results of simulations of the effect of selection
ID: 218695 • Letter: #
Question
(a) The graphs above show the results of simulations of the effect of selection on deleterious alleles. Genetic drift is not a factor in either simulation and the starting frequency and the strength of selection are the same. Based on the shape of the curves, why do the results of the simulations differ? Explain your answer.
(b) The allele in the bottom simulation is not eliminated entirely from the population. Would this change if genetic drift was allowed to occur? Why or why not?
Final frequencies 0.8 A2:1 A1A1:0 A1A2:0 A2A2:1 2 10 20 30 40 50 Final frequencies A1:004966 A2:0.95034 A1A1:0.00247 A1A2:0.09138 A2A2:0.90315 0.8 0.6 10 20 30 4 50 GenerationExplanation / Answer
In figures a and b, even though the starting frequencies of the occurences of alleles is the same and the strength also is the same, and making a consoderation that the genetic drift never occurs, it can be concluded that the alleles did completely vanish or started diasappearing to the level where the generation kept on declining while in figure b, with the same amount og frequencoes and strength the generation declined but never reached the minimal i.e. Zero and hence we can say that genetic drift if happens can cause the generation to loose some of the alleles.
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