Which factor do biologists calculate when they determine whether a population is in hardy-weinberg equilibrium?
mutation rate
genotype frequencies
number of phenotypes
rate of migration

The correct answer is-

genotype frequencies.

Hardy-Weinberg equilibrium is a condition according to which frequency of gene variant in the population of sexually reproducing individuals remains constant over generations ( that is it does not change from one generation to another generation).

There is an equation for the Hardy Weinberg law, which helps in determining the genotypes ( such as frequency of homozygous dominant, heterozygous domiant, and homozygous recessive genotypes). The equation is-

Where p² represents the homozygous dominant, 2pq represents heterozygous domiant, and q² for homozygous recessive genotypes.

the overall balanced equation

6co2 + 6h2o > c6h12o6 + 6o2

sunlight energy

where: co2 = carbon dioxide

h2o = water

light energy is required

c6h12o6 = glucose

o2 = oxygen