In the Hardy-Weinberg equation, what does 2pq refer to?

A) the frequency of heterozygotes in a population
B) the frequency of both alleles in a population
C) the frequency of homozygotes in a population
D) none of the above

Hardy-Weinberg Equation

A fundamental principle in genetics that provides a mathematical relationship to predict the genetic variation and allele frequencies in a population under certain conditions, showing that allele frequencies in a sexually reproducing population remain constant from one generation to the next in the absence of other evolutionary influences.

Heterozygotes

Individuals having two different alleles of a particular gene, resulting in a genetic variation.