Describe the usefulness of the hardy-weinberg model to population geneticists

The Hardy-Weinberg Principle is also known as the "change in allele frequencies. It  allows us to calculate the changes in allele frequencies.This principle prevents mutation from occurring from generation to generation. T It also allows people to see which trait is predominant in that given period. However, there is particular requirement must be met to maintain this principle. 

Reactants are mean lol