Question

Hemophilia is a sex-linked recessive disorder.

List all the unique genotypes for males without hemophilia.

Answer 1

Suppose H is normal blood, while h is hemophilic. So the unique genotype for males without hemophilia will be

• X^HY

Yes, you find me right, I am just showing only one genotype; because you are right that Hemophilia is a sex-linked recessive disorder, but the important point is that it is an X-linked disorder. So there is no point remaining of being a carrier male, as for this disorder only female may be carriers. As a result of that, there are only two conditions of males regarding hemophilia:

• X^HY= Non hemophilic Male/ Normal male
• X^hY= Hemophilic MALE

Hope, the answer helps you.