Question

In a cross of Ss x Ss, the probability of having a heterozygous genotype is

A. 1/4.
B. 1/3.
C. 1/2.
D. 2/3.
E. 3/4.

Answer 1

The correct answer is C. 1/2. In a cross between two heterozygous individuals (Ss x Ss), there is a 50% chance of producing offspring with the heterozygous genotype (Ss), a 25% chance of producing offspring with the homozygous dominant genotype (SS), and a 25% chance of producing offspring with the homozygous recessive genotype (ss).