since the observed and expected genotype frequencies are not the same. Hardy-Weinberg equilibrium describes a population in which allele and genotype frequencies remain constant from generation to generation in the absence of evolutionary forces.
In this case, the population is not in Hardy-Weinberg equilibrium because the observed genotype frequencies do not match the expected frequencies based on the allele frequencies calculated. This could indicate the presence of evolutionary forces such as natural selection, genetic drift, gene flow, or mutation that are causing changes in allele frequencies in the population. Further investigation would be needed to determine the specific factors influencing the genotype frequencies in this population.
To calculate the allele frequencies in the population, we can assign the dominant allele (gray wings) as "G" and the recessive allele (white wings) as "g."
Given that 20% are homozygous dominant (GG), 20% are heterozygous (Gg), and 60% are homozygous recessive (gg), we can determine the allele frequencies.
The frequency of the dominant allele (G) can be calculated as follows:
( 2 ^ * frequency of GG individuals) + (frequency of Gg individuals)
=( 2 ^ * 0.20)+0.20 = 0.4 + 0.2
= 0.6
The frequency of the recessive allele (g) can
be determined by subtracting the frequency of the dominant allele (G) from 1:
1 - 0.6 = 0.4
The allele frequencies in this population are 0.60 for G and 0.40 for g.
We can use the allele frequencies calculated earlier.
The expected frequency of GG individuals is (frequency of G)^2 = 0.60^2 = 0.36 (or 36%).
The expected frequency of Gg individuals is 2* (frequency of G) * (frequency of g )=2 * 0.60^ * 0.4 = 0.48 (or 48%).
The expected frequency of gg individuals is (frequency of g)^ 2 = 0.4 ^ 2 = 0.16 (or 16%).
The observed genotype frequencies differ from the expected frequencies (36% GG, 48% Gg, and 16% gg). The population is in Hardy-Weinberg equilibrium
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