The tendency of a population to remain in genetic equilibrium may be disturbed by

If $51\%$ of the members in a population possess at least one recessive allele,find the frequency of the dominant phenotype.

$A$ population is in Hardy-Weinberg equilibrium for a gene with only two alleles. If the gene frequency of an allele $A$ is $0.7$,the genotype frequency of $Aa$ is

Hardy-Weinberg equilibrium is affected by -

$A$ population of diploid organisms is at Hardy-Weinberg equilibrium. If the frequency of allele $A$ is $0.1$, the frequency of $AA$ is . . . . . . .

Lesch-Nyhan disease is an $X$-linked recessive disorder that causes neurological damage in human beings. $A$ survey of $500$ males from a Caucasian population revealed that $20$ were affected with this disorder. What is the frequency of the normal allele in this population?