Question

How many types of gametes will be produced by an individual having genotype AaBbcc?

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

Answer 1

Answer: (A)

Four

• To calculate the number of gametes in a given genotype, we need to first count the number of heterozygous combination within that particular genotype: AaBbcc - 2 heterozygous combinations - Aa and Bb.
• Now put it in the formula, $2^n$, where n= number of heterogeneous alleles present in the genotype.
• Here, $2^2$ = $4$
• Four types of gametes will be produced by an individual having the genotype AaBbcc. The gametes are: ABc, aBc, Abc, abc.