#### Question

What does the following equation represent? Explain.

p^{2} + 2pq + q^{2} = 1

#### Solution

The given equation represents the gene frequency of the total population according to Hardy–Weinberg law. In this equation, suppose a gene has two alleles A and a, and p is the frequency of occurrence of dominant allele A and q is the frequency of occurrence of recessive allele a in the parental generation.

Then according to the equation,

p^{2}+2pq+q^{2}=1

where p^{2} = frequency of occurrence of individuals with homozygous dominant alleles (AA)

2pq = frequency of occurrence of heterozygous individuals (Aa)

q^{2} = frequency of occurrence of individuals with homozygous recessive alleles (aa)

Is there an error in this question or solution?

Solution What does the following equation represent? Explain. Concept: Hardy - Weinberg'S Principle.