The allele for red-green colorblindness (use Xr or X^r) is X-linked and recessive to the allele for normal color vision (use XR or X^R). A heterozygous female and a red-green colorblind male have children. A) What are the genotypes of the parents involved in the cross?

B) What are all the possible gametes for each parent? (This information will help you to draw a Punnett Square on a scratch paper to determine the answer for the next question).

C) What are the expected phenotypic frequencies of the offspring that result from this cross?