A color blind male mates with woman who has normal vision.The woman has no history of colorblindness in her family.What percentage of their sons are expected to be colorblind?

Question

Quizplus · Accepted Answer

Color blindness is a recessive X-linked trait. The color blind male has an X chromosome with the color blindness allele and a Y chromosome. The woman has two normal X chromosomes. All sons receive the Y chromosome from their father and a normal X chromosome from their mother, so none of the sons will be colorblind.

A Color Blind Male Mates with Woman Who Has Normal