Question

If individuals of genotype Aa Bb Cc are intercrossed, how many different genotypes can occur in their progeny?

Options

• 6

• 9

• 15

• 27

Answer 1

27

Explanation:

Each gene locus has three possible genotypes when heterozygotes are crossed: AA, Aa, and aa (similarly for Bb and Cc). Since there are three gene loci, the total number of genotype combinations in the progeny is 3 × 3 × 3 = 27. Therefore, the progeny can have 27 different genotypes.