Principles of Inheritance and Variation Question 113
113. Both husband and wife have normal vision though their fathers were colour blind. The probability of their daughter becoming colour blind is
[1990]
(a)
(b)
(c)
(d)
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Answer : a
Hints & Solution
(a) The probability of the daughter becoming colour blind arises only when the father is also colour blind.
Husband - XY
Wife
So, probability of their daughter becoming colour blind is
