Question

In the Hardy-Weinberg theorem p² refers to what?

• A. The total alleles in the gene pool
• B. The heterozygous dominants in the gene poo
• C. The homozygous recessives in the gene pool
• D. The homozygous dominants in the gene pool

Answer 1

The correct option is D

The homozygous dominants in the gene pool

The Hardy-Weinberg principle, also known as the Hardy-Weinberg equilibrium, model, theorem, or law, states that allele and genotype frequencies in a population will remain constant from generation to generation in the absence of other evolutionary influences. Where p² represents Homozygous dominant character

Hardy - Weinberg Theorem= 1 = (p + q)² = p² + 2pq + q²

AA or Aa - dominant phenotype.

Aa - carriers of recessive trait. AA - non-carriers.

aa - recessive phenotype.

Homozygous - having pair of identical alleles (in this case AA or aa).

Heterozygous - having two different alleles (Aa).

Frequency - number of cases of particular event / total number of cases.

p = frequency of A

q = frequency of a

Note:

p + q = 1 = 100%

p² = frequency of AA (Homozygous dominant)

q² = frequency of aa

2pq = frequency of Aa

Since p + q = 1,