Question

Male-pattern baldness is a X-linked recessive trait, labelled X^{\text{b}}

Answer 1

Answer:

100%

Explanation:

Pattern baldness if X linked and recessive.

A father with $X^BY$ and a mother with $X^bX^b$ have a son.

First, let us look at the result of the cross between the two:

$X^BY$   x   $X^bX^b$

male progeny: $X^bY, X^bY$

female progeny: $X^BX^b, X^BX^b$

The two sons resulting from the cross inherited male pattern baldness. Hence, the percentage chance that the son will inherit male pattern baldness is 100.