Question

The modern synthesis theory states that evolution occurs through changes in the gene pool of _____.

Answer 1

The answer is "populations." It changed throught the gene pool of populations. Hope that helps.
~Deceptiøn

Answer 2

Population.

Step-by-step explanation:

Evolution may be defined as the change in the characteristic of the species over several generation with time. Natural selection acts as the main driving force in evolution.

Gene pool may be defined as the genetic information of the population of the particular species. The large number of gene pool indicates the genetic diversity in a population. The modern synthesis theory states that the evolution generally occur by changes in the gene pool of population. This theory was put forward by the combination of the different evolutionary theory. The evolution occurs in a population.

Thus, the answer is population.