What is the sum total of all genes present in a population called?

In a population that is not evolving, which of the following can cause a change in allele frequencies in a specific direction?

Identify the correct equation for the Hardy-Weinberg law.

If a population is in Hardy-Weinberg equilibrium and $25\%$ of the individuals exhibit the recessive trait,find the frequency of the recessive allele in the gene pool.

How many factors affect the Hardy-Weinberg equilibrium?

Factors affecting the Hardy-Weinberg principle are:
$I.$ Gene flow
$II.$ Genetic drift
$III.$ Mutation
$IV.$ Genetic recombination
$V.$ Natural selection
The correct combination is: