A man with a certain disease marries a normal woman. They have eight children (3 daughters and 5 sons). All the daughters suffer from their father's disease but none of the sons are affected. Which of the following mode of inheritance do you suggest for this disease?

Question

Accepted Answer

Sex-linked dominant. An affected father gives his X chromosome to all daughters and his Y chromosome to all sons. If the disease is X-linked dominant, every daughter who receives the affected X will be affected, while sons are not affected from the father’s X because they inherit his Y.

A man with a certain disease marries a normal woman. They have eight children (3 daughters and 5 sons). All the daughters suffer from their father's disease but none of the sons are affected. Which of the following mode of inheritance do you suggest for this disease?

Solution

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