In guinea pigs, the allele for short fur (Uppercase S) is dominant to the recessive allele for long fur (Lowercase s).

Question

In guinea pigs, the allele for short fur (Uppercase S) is dominant to the recessive allele for long fur (Lowercase s).

What percentage of offspring would be homozygous dominant if both parents were heterozygous for the trait?

Answer options with 5 options
A.
0%

B.
25%

C.
50%

D.
75%

E.
100%

Answer 1

C. 50%

When both parents are heterozygous (Ss), they each have a 25% chance of passing on the homozygous dominant genotype (SS) to their offspring. Therefore, 50% of the offspring would be homozygous dominant.