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The response of a change in allele frequency to selection may vary as a function of...

The response of a change in allele frequency to selection may vary as a function of the nature of the gene’s expression. Of the system’s below, which would be the most responsive to selective pressure? a. Dominant alleles. b. Recessive alleles. c. Alleles with additive effects. d. None of the above.

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Answer #1

Answer: Option (c) is correct as the alleles with additive effects are capable to influence final the expression level of dominant alleles as well as recessive alleles of a population also, during the long period of evolution. Alleles with additive effects allow populations to follow a moving in high-dimensional trait space.

Additive genetic effects occur when two or more genes source a single contribution to the final phenotype, or when alleles of a single gene (in heterozygotes) combine so that their combined effects equal the sum of their individual effects.

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