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ExamsNEETBiology

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

  1. 0%
  2. 25%
  3. 50%
  4. 75%

Correct answer: 0%

Solution

Colour blindness is usually X-linked recessive. A normal-vision father cannot pass a colour-blind X to his daughter, so even if the mother is a carrier, the daughter cannot be colour blind.

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