Color vision deficiency is more common in males than in females because it is controlled by a:

Question

Quizplus · Accepted Answer

Color vision deficiency is caused by a recessive X-linked gene. Since males only have one X chromosome, they are more likely to express the gene if it is present on their only X chromosome. Females, on the other hand, have two X chromosomes, so they are more likely to be carriers of the gene without expressing it.

Color Vision Deficiency Is More Common in Males Than in Females