Magine that a researcher is studying the color of grasshopper exoskeletons. Assume that this phenotype is caused by the action of two alleles. Green grasshoppers have the genotype AA and brown grasshoppers have the genotype aa. If the frequency of the A allele in this population is 0.2, what is the frequency of the a allele?

0.8

Explanation:

Allele frequency simply shows how common an allele is in a population.

It is calculated by counting the number of times it appears divided by the total number of copies of the gene.

The frequency of all alleles of a gene present in a population must equate to 1.

so, p+q=1

If the Allele frequency of A whose phenotype are green grasshoppers is 0.2 to find the frequency for a (brown grasshoppers) will be';

1-0.2=0.8