Yes, the gene frequency of red-green color blindness in males is equal to the prevalence of red-green color blindness. Red-green color blindness is partial color blindness, divided into red and green blindness. Patients are unable to distinguish between red and green and see two shades: yellow in the long-wave (red, orange, yellow, green) part and blue in the short-wave (cyan, blue, violet) part. Red-green color blindness is an X-chromosome recessive disorder. In males the gene frequency is equal to the incidence cause as follows: 1. There is no allele for red-green color blindness on the Y chromosome, which means that there is no dominant or recessive red-green color blindness gene in males; as long as the red-green color blindness gene exists in males, they will exhibit red-green color blindness. 2. Since the gene for greenish-red color blindness is recessive in females, females only show greenish-red color blindness when they are recessive and purely heterozygous. Clinically, in order to prevent and minimize the occurrence of this hereditary disease, it is recommended to go for relevant counseling before pregnancy in order to achieve eugenics.