1. the situation in which allele frequencies in the gene pool of the population remained constant is called a) evolution b) genetic drift c) genetic equilibrium d) natural selection

The correct answer is-

c) genetic equilibrium.

Genetic equilibrium  can be described as a situation where frequency of a gene variant ( also called allele/ alternative form of a gene) does not change over generations.

This represents that the population is not evolving over generations.

There should be 5 situation to meet the criteria of genetic equilibrium. They are as follows-

1) There should be random mating between organisms of population.

2) Size of population should be large.

3) There should be no immigration or emigration.

4) No mutations,

5) There should be no natural selection .