Principles of Inheritance and Variation Question 183

183. A diseased man marries a normal woman. They have three daughters and five sons. All the daughters were diseased and sons were normal. The gene of this disease is

(a) sex-linked dominant

(b) sex-linked recessive

(c) sex-linked character

(d) autosomal dominant

Show Answer

Answer : a

Hints & Solution

(a) Sex linked disorders follow criss-cross inheritance pattern in which affected father passes it on to his daughters. The daughters receive one of their $X$ chromosome from their fathers.



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