Inheritance pattern of red-green color blindness

Feb 27, 2023 Source: Cainiu Health
Dr. Cui Xin
Introduction
The inheritance pattern of red-green color blindness is X-linked recessive. Therefore, males have a higher prevalence than females. If both parents are affected by red-green color blindness, all their offspring will be affected. If only the mother is affected, all sons will be affected and all daughters will be carriers of the defective gene. If only the father is affected, all daughters will be carriers of the defective gene, while sons will not carry the defective gene.

Red-green color blindness is inherited in an X-linked recessive pattern. Therefore, the prevalence is higher in males than in females.

Red-green color blindness is primarily transmitted through X-linked recessive inheritance. This means that the gene responsible for the trait or disorder is located on the X chromosome. Females have two X chromosomes, while males have only one. As a result, if a female has one normal dominant X chromosome, she typically does not develop the condition. However, if a male inherits one defective recessive X chromosome, he will be affected.

If both parents are affected by red-green color blindness, all their children will inherit the condition. If only the mother is affected, all her sons will be affected and all her daughters will be carriers of the defective gene. If only the father is affected, all his daughters will be carriers, while his sons will not carry the defective gene.