Question

Simon has curly hair. if he is homozygous for the gene that determines curly hair, what is true of his parents??

a. ?one must have a recessive allele for straight hair, while the other must have a dominant allele for curly hair.
b. ?they must both have mutated dominant genes for straight hair
c. ?they must each have a recessive allele for straight hair.
d. ?they must each have a recessive allele for curly hair.

Answer 1

D. . They have contributed the same type of allele for this gene.