The point at which the rate that a deleterious allele is being eliminated from a population by natural selection is in equilibrium with the rate at which the deleterious allele is being replaced by a new mutation is termed ________.
A) mutation-dependent selection
B) frequency-dependent selection
C) mutation-dependent equilibrium
D) mutation-selection balance

Question

Quizplus · Accepted Answer

This is the classic definition of mutation-selection balance, where the negative selective pressure against a deleterious allele is balanced by the positive pressure of recurrent mutation. This equilibrium point is important for understanding the persistence of genetic variation and the evolution of complex genetic traits. The other choices (A, B, and C) are not accurate descriptions of this concept.

The Point at Which the Rate That a Deleterious Allele