Both husband and wife have normal vision though their fathers were colourblind. The probability of t

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Both husband and wife have normal vision though their fathers were colourblind. The probability of their daughter becoming colourblind is

Accepted Answer

In this case when the fathers of both husband and wife were colourblind and they have normal vision, husband have norrmal vision while wife is carrier of this disease.
Daughter of such parents will be carrier but there is no chance of her to be colourblind.

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