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4.Principles of Inheritance and Variation
medium
A husband and wife have normal vision but fathers of both of them were colour blind. Probability of their first daughter to be colour blind is
A
$25\%$
B
$50\%$
C
$75\%$
D
$0\%$
(AIPMT-1990)
Solution
(d) Probability of their first $(or any)$ daughter being colourblind is nil as the daughter of normal father can never be colourblind.
Standard 12
Biology