The ability to see red is inherited from an X-chromosome gene, according to researchers at the University of Arizona. Because women have two X chromosomes, the two copies of these genes aid in women's perception of the red-orange spectrum.
The ability to see red is inherited from an X-chromosome gene, according to researchers at the University of Arizona. Because women have two X chromosomes, the two copies of these genes aid in women's perception of the red-orange spectrum.