What is the risk for hemophilia A in the grandsons if their paternal grandfather is a hemophiliac?
A) 0
B) 1/8
C) 1/4
D) 1/2
E) 100%

Question

Quizplus · Accepted Answer

Hemophilia A is an X-linked recessive disorder. A paternal grandfather cannot pass his X chromosome to his grandsons; he passes it to his daughters, who may become carriers. The grandsons inherit their X chromosome from their mother, not their paternal grandfather.

What Is the Risk for Hemophilia a in the Grandsons