In human if gene A is on the second chromosome and has 3 dif

In human, if gene A is on the second chromosome and has 3 different alleles, how many different genotypes would be found in the population? Circle your answer.

Solution

Answer:

If 3 alleles are segregating in a particular locus, 6 genotypes will form.

Allelic frequencies can be calculated directly from gentype frequencies if it is already known. If 3 alleles are present in the population, the allelic frequencies can be calculated as under:

p = p² + 1/2 (pq) + 1/2 (pr)

q = q² + 1/2 (pq) + 1/2 (qr)

r = r² + 1/2 (pr) + 1/2 (qr)