A) there will be no daughter colour blind
B) all sons will be colour blind
C) all daughter will be colour blind
D) half sons will be colour blind
Correct Answer: D
Solution :
A colour blind man marry with a daughter of colour blind father. The generation will be half sons colour blind. Daughter of colour blind person is a carrier of this disease, i.e. one X-chromosome have recessive genes. Therefore, half sons will be colour mblind.
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