A woman whose mother is colourblind and ...

A woman whose mother is colourblind and father is haemophilic marries a man whose mother is haemophilic and father is colourblind. Which of the following is correct about its progeny?

A

Thay won't have any who is free from both these diseases

B

Half of their children are haemophilic while the other half are colourblind.

C

Half of their children will be colourblind while one fourth will be haemophilic

D

Half of their children will be colourblind while one fourth will be colourblind

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The correct Answer is:

D

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