question_answer

If a normal women marries a colourblind man  [Kerala PMT 2004]

A) All their children will be colourblind

B) All their sons will be colourblind but the daughters will be normal

C) All the children will be normal

D) all daughters will be colourblind and sons will be normal

E)   All sons and 50% of daughters are normal but 50% daughters will be coloublind.

Correct Answer: C

Solution :

Genotype of normal women - XX Genotype of colourblind man - XcY