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

Question

Inheritance of which of the following traits is shown in the given cross ? (A) X-linked dominant trait (B) X-linked recessive trait (C) Autosomal recessive trait (D) Autosomal dominant trait

Tardigrade Admin · Accepted Answer

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^{c}

in carrier individuals

(XXC)

does not cause the disease, thus the trait is recessive.

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

$X$ -linked dominant trait

$X$ -linked recessive trait

Autosomal recessive trait

Autosomal dominant trait