An example of sex-linked color vision differences

It is well known that men and women may experience, perceptually and cognitively, the appearance of color differently. One of the possible physiological factors underlying these differences is a sexual dimorphism in the gene that encodes the photopigment of the long-wavelength-sensitive cones in the retina, manifest in a different frequency of expression in men and women. The p resent work describes a psychophysical experiment that revealed significant diffrences in color perception between men and women, and that consequently advises the separate treatment of the two populations. (c) 2007 Wiley Periodicals, Inc.