If there are 3 different alleles for a particular gene in a population of diploid organisms, how many different genotypes are possible in the population?
A)2
B)3
C)6
D)9
E)12

Question

Quizplus · Accepted Answer

Given 3 different alleles (let's call them A, B, and C) for a gene in a diploid organism, the possible genotypes can be formed by considering all combinations of these alleles taken two at a time (since diploid organisms have two alleles for each gene, one from each parent). The combinations include AA, BB, CC (homozygous genotypes), and AB, AC, BC (heterozygous genotypes), totaling 6 different genotypes.

If There Are 3 Different Alleles for a Particular Gene