In a Hypothetical Population's Gene Pool, an Autosomal Gene, Which

question 2

Multiple Choice

In a hypothetical population's gene pool, an autosomal gene, which had previously been fixed, undergoes a mutation that introduces a new allele, one inherited according to incomplete dominance. Natural selection then causes stabilizing selection at this locus. Consequently, what should happen over the course of many generations?

• A) The proportions of both types of homozygote should decrease.
• B) The proportion of the population that is heterozygous at this locus should remain constant.
• C) The population's average heterozygosity should decrease.
• D) The two homozygotes should decrease at different rates.

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