Question

If a haemophilic man marries a carrier woman then which of the following holds true for their progenies?

• A. 50% daughters are carrier and 50% are haemophilic.
• B. All the daughters are haemophilic.
• C. All Sons are haemophilic and all daughters are normal.
• D. All sons normal, all daughters carriers.

Answer 1

The correct option is A 50% daughters are carrier and 50% are haemophilic.

When a haemophilic man $\left(X^{h}Y\right)$ marries a carrier woman $\left(X{X}^h\right)$, then 50% daughters are carriers and 50% are haemophilic.