____________________ and frequency-dependent selection are mechanisms that preserve balanced polymorphism.
A) the founder effect
B) genetic drift.
C) heterozygote advantage
D) stabilizing selection
E) disruptive selection.

Question

Quizplus · Accepted Answer

Heterozygote advantage is a mechanism that preserves balanced polymorphism because it allows individuals with two different alleles (heterozygotes) to have a higher fitness than those with two identical alleles (homozygotes), thus maintaining genetic variation in the population.

____________________ and Frequency-Dependent Selection Are Mechanisms That Preserve Balanced Polymorphism