Assume That Having Long Arms Is a Recessive Genetic Trait

Multiple Choice

Assume that having long arms is a recessive genetic trait controlled by a single pair of genes.If a child has long arms, but both the child's biological parents have short arms, what are the parents' genotypes for this trait?

A) The father is heterozygous and the mother is homozygous.
B) Both parents are heterozygous.
C) The mother is heterozygous and the father is homozygous.
D) Both parents are homozygous.