<Tr> <Th> Frequency </Th> <Td> Red - green: 8% males, 0.5% females (Northern European descent) </Td> </Tr> <P> Color blindness, also known as color vision deficiency, is the decreased ability to see color or differences in color . Simple tasks such as selecting ripe fruit, choosing clothing, and reading traffic lights can be more challenging . Color blindness may also make some educational activities more difficult . However, problems are generally minor, and most people find that they can adapt . People with total color blindness (achromatopsia) may also have decreased visual acuity and be uncomfortable in bright environments . </P> <P> The most common cause of color blindness is an inherited problem in the development of one or more of the three sets of color sensing cones in the eye . Males are more likely to be color blind than females, as the genes responsible for the most common forms of color blindness are on the X chromosome . As females have two X chromosomes, a defect in one is typically compensated for by the other, while males only have one X chromosome . Color blindness can also result from physical or chemical damage to the eye, optic nerve or parts of the brain . Diagnosis is typically with the Ishihara color test; however, a number of other testing methods also exist . </P> <P> There is no cure for color blindness . Diagnosis may allow a person's teacher to change their method of teaching to accommodate the decreased ability to recognize colors . Special lenses may help people with red - green color blindness when under bright conditions . There are also mobile apps that can help people identify colors . </P>

Where does the color blind gene come from