What causes color blindness?

Answer 1

This trait is carried on the X chromosome and is a recessive trait so that only men can get it but it is carried by women.

Color blindness is caused entirely by hereditary traits. So in a nutshell, you can't naturally "get" color blindness during your lifetime, unless if you remove your "cones." However, if you are a male carrier of the colorblind trait, your chances of being born color blind are higher than if you are a female carrier.

Color blindness most often happens because of a genetic disorder. This happens when a section of DNA is copied incorrectly from parent to offspring.

Colorblindness is caused by three cones in the back of the eye.Three different colors.If these cones are not working properly,then you have trouble telling the difference between different colors.Ex.blue and purple.
You become colorblind when the cones in your eye bend or misshape and stop working
Most color blindness is caused by an inherited genetic defect where the functioning of the color receptive cones in the retina is deficient - or where the cones are absent altogether. It is most commonly inherited from mutations on the X chromosome. There are different genetic defects that cause different types of color blindness. Some manifest at birth, while others are progressive, i.e. persons with some defects gradually lose their ability to distinguish some or all colors. Because males have one X chromosome and one Y chromosome while females have two X chromosomes, males are at greater risk for having color blindness. If a woman inherits a normal X chromosome in addition to the one that carries the mutation, she will not display the mutation. Men do not have a second X chromosome to override the chromosome that carries the mutation.