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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

User Tony Brix
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2 Answers

3 votes
95% sure its B.. XCXc and XCY.
Hope this helps!!
User Fatih Bulut
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5 votes

Answer:

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

User Sridhar
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