Question

Explain Hardy-Weinberg's principle

Answer 1

According to the Hardy-Weinberg principle, "In the absence of distributing factors, the genetic variation in a population will remain constant from one generation to the next at an equilibrium point." We refer to this occurrence as genetic equilibrium. Additionally, the sum of all allelic frequencies is 1.

1. The genotypic frequencies of both the alleles (dominant and recessive) are represented by (p + q)² = 1.
2. The binomial expansion of this is p² + 2pq + q² = 1.
3. If A is dominant allele and a is recessive then
4. Hence: AA= p², aa = q² and for 2Aa = 2pq
   p² + 2pq + q² = 1