Question

How many combinations of gametes will be produced by an organism with AaBBCc genotype?

• A. 3
• B. 4
• C. 9
• D. 6

Answer 1

The correct option is B 4

Total number of types of gamete produce by an organism is 2${}^n$, where n is the number of heterozygous genes present.

The given genotype is heterozygous for two genes, this total possible gametes by it; 2${}^2$ = 4. Thus, option B is correct. The gametes produced by AaBBCc are ABC, ABc, aBC and aBc.