Color blindness can be inherited, but it is not certain how many generations it can be passed on. Color blindness is a typical genetic disease, the gene for which is located on the X chromosome, and it is inherited in a consanguineous manner. When a man with color blindness marries a healthy woman, if he has a son, he will be completely normal and his offspring will not carry the gene for color blindness. If he has a daughter, she will be a carrier of the gene for color blindness, and in the third generation, if she is a man, she will have a 50% chance of developing color blindness. If a woman with color blindness marries a healthy man and has a son, she will definitely be color blind, and if she has a daughter, she will be a carrier of the color blindness gene. The 3rd generation is also likely to be color blind. When a male color-blind patient marries a female color-blind patient, both sons and daughters will be color-blind, and the third generation will also have the possibility of developing color blindness. The probability of color blindness in the offspring varies with each subsequent generation depending on the genotype, which can be further deduced from the previous description.