What ultimately happens to the frequency of heterozygotes under drift? Why? Answ

Question

What ultimately happens to the frequency of heterozygotes under drift? Why?
Answer
A.
The frequency of heterozygotes declines because assortative mating of heterozygotes produces homozygotes as well as heterozygotes.
B.
The frequency of heterozygotes increases because alleles ultimately are fixed or lost under drift.
C.
The frequency of heterozygotes declines because alleles ultimately are fixed or lost under drift.
D.
The frequency of heterozygotes increases because assortative mating of homozygotes produces heterozygotes.

Explanation / Answer

B. The frequency of heterozygotes increases because alleles ultimately are fixed or lost under drift.

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