Question

A carrier woman having a gene for colour blindness and haemophilia on the same X-chromosome marries a colour blind man. What percentage of children will suffer from both the traits?

• A. 100$\%$
• B. 50$\%$
• C. 75$\%$
• D. 25$\%$

Answer 1

The correct option is D 25$\%$


So, there is 25 $\%$ of chance of the children suffering from both traits, all of which are boys.