Principle of Inheritance and VariationMedium
Question
A man with a certain disease marries a normal woman. They have eight children (3daughters and 5 sons). All the daughters suffer from their father′s disease but none of the soms are af fected. Ehich of the following mode of inheritance do you suggest for this disease ?
Options
A.Sex-linked recessive
B.Sex-linked dominant
C.Autosome dominant
D.Sex-limited recessive
Solution
Daughters have 2X-chromosomes one of them is from father and other comes from mother, in this case all the daughters are suffering from the fathers disease hence, X-chromosome of father must be carrying a dominant trait.
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