Ok, now you know her genotype and as a female, she has two X chromosomes. Where do they come from?

As a male, her father has only a single X chromosome and because the woman received one of her X chromosomes from him, what would that make his genotype?

Now return to the question page and select the correct answers.

You already know the woman's genotype. Her husband has normal vision, so what is his genotype?

Now perform a punnett square, placing the gametes of one parent across the top and the gametes of the other parent down the side. You will not be able to use superscripts on this table so use XB, Xb, and Y in your notation.

Your punnett square should look similar to the one below. If it does not, review the material on gamete formation and how to set up the punnett square and try again.

Now count up how many of each genotype and phenotype you have in the male offspring and in the female offspring.

Now return to the question page and select the genotypes requested.