Which term describes the position of a gene on a chromosome?

A:centromere

B:genotype

C:locus

D:phenotype

A man who is red-green color-blind marries a woman who is neither color-blind nor a carrier for this trait. Which statement would best describe their probable offspring?

A:All of their sons would be color-blind.

B:All of their children would be color-blind.

C:50 percent of their sons would be color-blind.

D:None of their children would be color-blind but all of their daughters would be carriers.