Inheritance of which of the following traits is shown in the given cross?

X-linked dominant trait

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X-linked recessive trait

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Autosomal recessive trait

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Autosomal dominant trait

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Solution

The correct option is A X-linked recessive trait
In the given cross, passing of disease is from carrier female to male progeny (criss-cross inheritance). Any trait that shows criss-cross inheritance is located on the sex chromosome. Presence of a single recessive gene i.e. X~ in carrier individuals $(X X^{c})$ does not cause the disease, thus the trait is recessive.

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