Question

Which of the following represents the Hardy Weinberg equation?

(a) p^2 + q^2 = 1

(b) p^2 + 2pq + q^2 = 1

(c) p^2 + q^2 = 0

(d) (p^2 + q^2)^2 = 1

This question was posed to me in final exam.

The query is from Hardy-Weinberg Principle-2 in division Evolution of Biology – Class 12

Answer 1

The correct option is (b) p^2 + 2pq + q^2 = 1

To explain: The Hardy Weinberg equation is p^2 + 2pq + q^2 = 1. Here, p^2 denotes the allele of AA and q^2 denotes the allele aa. This shows that p, q,  and A, a are related in multiplication. So, 2pq represent Aa.