Consider the graph below that depicts the change in frequency of a deleterious m

Question

Consider the graph below that depicts the change in frequency of a deleterious mutant allele (q) over a number of generations. Lines A and B represent two different scenarios of mutation- selection balance for this deleterious mutant allele (q). Based upon the change in frequency over generations for this mutant allele in either line A or line B, is the mutant allele (q) more likely a dominant or recessive allele and why? Based upon the rate of change depicted by line A, how are mutation and selection operating on this gene locus to influence the frequency of q in this population? What about line B, how does this change your answer with respect to the strength of selection and mutation rate of q?

Explanation / Answer

7) Based on the graph, the frequency of deleterious mutant allele increases more rapidly in line A compared to line B. Therefore, the mutant allele in line A is more likely to be a dominant allele.

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