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KCET · BIOLOGY · STD 12 - 4. Principles of Inheritance and Variation

Both male and female have normal vision though their fathers were colour blind, and mothers did not have any gene for colour blindness. The probability of their daughter becoming colour blind is

  1. A 0%
  2. B 15%
  3. C 25%
  4. D 50%
Verified Solution

Answer & Solution

Correct Answer

(A) 0%

Step-by-step Solution

Detailed explanation

(A) 0%,
The daughter can have genotype XX or \(XX ^{ C }\), thus she could be either normal or carrier, but the probability of she being colour blind is \(0 \%\).