A normal male and a female carrier for red-green color blindness mate.Given that red-green color blindness is an X-linked recessive trait,what is the likelihood of their children being affected?

Question

Quizplus · Accepted Answer

Because a single copy of an X-linked recessive gene will cause disease in a male,whereas two copies are required for disease expression in females,more males are affected by X-linked recessive diseases than are females.
Males are more often affected at a greater than 25% rate.
Males are more often affected at a greater than 50% rate.
Males are most often affected.

A Normal Male and a Female Carrier for Red-Green Color