Question

A man suffering from recessive X-linked disease marries a normal woman. In the progeny ________________.

• A. All sons are normal
• B. All daughters are diseased
• C. All sons are diseased
• D. None of the above

Answer 1

The correct option is A All sons are normal

Let us take an example of X-linked disease (Haemophilia) to understand the concept.

Haemophilic is also a sex-linked recessive disease (like color blindness).
None of the children would suffer from haemophilia, though girls would be carries of the disease.

Results: All daughters are carrier while all sons are normal.

So, the correct answer is 'All sons are normal'.