Among 40 individuals, 4 are heterozygous for a particular locuswith two alleles (A1 and A2), 16 are homozygous for allele A1, and20 are homozygous for allele A2.
1. What is the frequency of allele A1?
2.What is chi-squared for your observed/expected genotypes?
3.Does the population depart significantly from Hardy-Weinbergexpectations? (For 1 degree of freedom χ,> 3.84 issignificant)
