Apopulation of pea plants has 25% dwarf plants and 75% tall plants. the tall allele, t, is dominant to dwarf (t). what percentage of tall plants is heterozygous?

Here we would be using Hardy Weinberg equation for the calculation of allele and genotypic frequencies.

Dwarf genotype frequency = = 25% = 0.25

Frequency of allele t = q = = = 0.5

According to the equation,

p + q = 1

p = 1 - 0.5 = 0.5

Now, the frequency of heterozygous tall plants would be-

2pq = 2 * 0.5 * 0.5 = 0.5 or 50% heterozygous tall plants.

answerhomologous structures;