Question

In sheep, white fur is dominant to black fur. If two white sheep produce a black offspring, the parent’s genotypes for color must be:
A) Heterozygous.
B) Homozygous white.
C) Homozygous black. D) White

Answer 1

The answer is A

The parents must be heterozygous because they’re dominant for white fur but they also carry that recessive allele for black fur. The offspring will have a 25% chance of having black fur.