A genetically sex-linked characteristic accounts for the greater incidence of
A) retinal disparity among females than among males.
B) visual afterimages among males than among females.
C) accommodation among females than among males.
D) color-deficient vision among males than among females.

Question

Quizplus · Accepted Answer

Color-deficient vision (also known as color blindness) is a genetically sex-linked characteristic that is more common among males than females. This is because the genes responsible for color vision are located on the X chromosome, and males only have one X chromosome while females have two. Therefore, if a male inherits a faulty gene on his X chromosome, he will be color deficient, whereas a female would need to inherit two faulty genes (one from each X chromosome) to be color deficient.

A Genetically Sex-Linked Characteristic Accounts for the Greater Incidence of