Question

How many different kinds of gametes will be produced by a plant having the genotype AABbCC?

• A. Four
• B. Three
• C. Nine
• D. Two

Answer 1

The correct option is D

Two

The correct option is D.

Explanation of the correct option:

1. A plant with genotype AABbCC will only generate ABC and AbC gametes.
2. The 2ⁿ formula is used to determine the phenotype present in the cross, whereas the 3ⁿ formula is used to calculate the genotypes present in the cross.
3. A cross's phenotypic ratio may be estimated using the formula (3:1)ⁿ, where n is the number of genes present.
4. For example, the phenotypic ratio of a trihybrid cross may be stated and calculated as (3:1)3 = (27:9:9:9:3:3:3:1).

Final answer: Two kinds of gametes will be produced by a plant having the genotype AABbCC.