Question

Hemophilia is a genetic disorder that causes a protein required for normal blood clotting to be missing.

In a cross with a mother who carries the allele for hemophilia and a father who has normal blood clotting what would be the genotypes of the parents?
A. XCXC, XCY
B. XCXc, XCY
C. XCXc, XcY
D. XCXC, XcY

Answer 1

95% sure its B.. XCXc and XCY.
Hope this helps!!

Answer 2

The correct answer would be option B. XCXc, XCY

Explanation:

Hemophilia is a rare X-linked recessive disorder, which means if any male individual carry a X chromosome with recessive allele (Xc) he will be hemophilic, however, in females it will express itself only if she has both recessive alleles of X chromosome (XcXc) or she will be carrier of the disease if she has one dominant and one recessive allele of the disease (XcXC).

Hence, the genotype of carrier mother and a normal father would be XCXc and XCY respectively.

Thus, the correct answer is option B. XCXc, XCY