A man and a woman, who do not show any apparent signs of a certain inherited disease, have seven children (2 daughters and 5 sons). Three of the sons suffer from the given disease but none of the daughters are affected. Which of the following mode of inheritance do you suggest for this disease ?

Question

Dr. Abubacker · Accepted Answer

[Solution from source] Unaffected parents with affected sons only fits an X-linked recessive trait: the mother is a carrier and passes the mutant X to some sons, while daughters receive the father's normal X and are not affected. A dominant trait would show up in at least one of the parents. Answer (4).

Q. A man and a woman, who do not show any apparent signs of a certain inherited disease, have seven children (2 daughters and 5 sons). Three of the sons suffer from the given disease but none of the daughters are affected. Which of the following mode of inheritance do you suggest for this disease ?

Explanation

Reviewed by Dr. Abubacker

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