Nate is color-blind.His gene for color blindness is MOST likely a:
A) dominant gene on his X chromosome.
B) dominant gene on his Y chromosome.
C) recessive gene on his X chromosome.
D) recessive gene on his Y chromosome.

Question

Quizplus · Accepted Answer

Color blindness is a sex-linked recessive trait, meaning that the gene for color blindness is located on the X chromosome. Since males have only one X chromosome, they are more likely to express the trait when they inherit one copy of the gene from their mother. Females, on the other hand, must inherit two copies of the gene (one from each parent) to express the trait. Therefore, Nate's gene for color blindness is most likely a recessive gene on his X chromosome.

Nate Is Color-Blind