Answer:
Allele frequencies.
Step-by-step explanation:
The Hardy–Weinberg principle, also known as the Hardy–Weinberg equilibrium, model, theorem, or law, states that allele and genotype frequencies in a population will remain constant from generation to generation in the absence of other evolutionary influences.
The equation he propose is
+ 2pq +
= 1
The sum of the entries as the genotype frequencies must sum to one.