Answer any three of the following (restrict each answer 2 to 3 important sentences).
What is Hardy-Weinberg principle?

Explanation

Hardy-Weinberg Principle
This principle states that the allele frequencies in a population are stable and is constant from generation to generation, i.e. gene pool remains constant. This is called genetic equilibrium or Hardy-Weinberg equilibrium.
Sum total of all the allelic frequencies is equal to 1, e.g. in a diploid, if p and represent the frequency of an allele A and allele a The frequency of AA individuals in a population is `p^2`, of aa is `q^2` and of Aa is 2 pq.
Hence, it can be expressed by the following reaction
`p^2+2pq+q^2=1`