A man whose father was colour-blind marries a woman who had a colour-blind mother and normal father. What percentage of male children of this couple will be colour-blind ?

Question

MCQ (Single)Colour Blindness as Sex-Linked DisorderCBSE PYQ

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The maternal grandfather of a boy is colourblind, but his maternal grandmother is normal. The father of the boy is also normal. What is the probability of this boy being colourblind?

TextSex-Linked Inheritance in HumansColour Blindness as Sex-Linked Disorder