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JIPMER2019ZoologyPrinciples of Inheritance and Variation

A normal man and a normal woman both having one of their parent albino, if get married then what is the probability of their child of being albino?

Options

  1. A20 %
  2. B25 %
  3. C75 %
  4. D80 %

Correct answer

B. 25 %

Step-by-step solution

Albinism is inherited in an autosomal recessive pattern that means both parents contribute a mutated gene for the person to have albinism. So, there is a 25 % chance that any of their children will have albinism. Then 50 % of the children will carry the mutated gene, but will not have albinism. The last possibility is to neither have albinism or carry the mutated gene, that's the other 25 % chance.

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