In some butterfly populations, there are equal frequencies of alleles that code for black and yellow coloration. This is an example of
A) balanced polymorphism.
B) nonrandom mutations.
C) directional selection.
D) stabilizing selection.
E) sexual selection.

Question

Quizplus · Accepted Answer

Balanced polymorphism occurs when two or more alleles persist in a population at high frequencies, often due to selective advantages or a balance between different selective pressures, as seen in the example of equal frequencies of alleles for black and yellow coloration in some butterfly populations.

In Some Butterfly Populations, There Are Equal Frequencies of Alleles