Why is color vision deficiency more common in men than in women?
A)It depends on a dominant gene on the Y chromosome.
B)It depends on a recessive gene on the Y chromosome.
C)It depends on a dominant gene on the X chromosome.
D)It depends on a recessive gene on the X chromosome.

Question

Why is color vision deficiency more common in men than in women?​
A)It depends on a dominant gene on the Y chromosome.
B)​It depends on a recessive gene on the Y chromosome.
C)​It depends on a dominant gene on the X chromosome.
D)​It depends on a recessive gene on the X chromosome.

Quizplus · Accepted Answer

Color vision deficiency is most commonly caused by a gene mutation on the X chromosome. Since males have only one X chromosome and females have two, males are more likely to be affected by the mutation if it is present on their only X chromosome. Whereas, females have a backup X chromosome which can often compensate for the mutated gene. Therefore, color vision deficiency is more common in men than in women.

Why Is Color Vision Deficiency More Common in Men Than