In population genetics, the genotype frequency is the frequency or proportion (i.e. 0 < f < 1) of genotypes in a population.

It may be denoted thus:

$f(\backslash mathbf\{AA\})$

Compare allele frequency.

The Hardy-Weinberg law predicts genotype frequencies from allele frequencies under certain conditions, in which case:

$f(\backslash mathbf\{AA\})\; =\; p^2$

$f(\backslash mathbf\{Aa\})\; =\; 2pq$

$f(\backslash mathbf\{aa\})\; =\; q^2$

Genotype frequencies may be represented by a De Finetti diagram.

population genetics

基因型频率