What is the total sum of genes and their alleles in a population collectively called?

If mating is random,the population is large,and mutation does not occur,then the gene frequencies of the population from generation to generation remain constant. This principle was proposed by:

$A$ gene locus has two alleles $A$ and $a$. If the frequency of the dominant allele $A$ is $0.4$,then what will be the frequency of homozygous dominant,heterozygous,and homozygous recessive individuals in the population?

According to the Hardy-Weinberg principle,a difference in the values of measured and expected allelic frequencies indicates all of the following,except:

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.

In a population of $800$ rabbits showing Hardy-Weinberg equilibrium,the frequency of recessive individuals was $0.16$. What is the frequency of heterozygous individuals?