Answer:
Color blindness is an inherited mutation.
Step-by-step explanation:
The most common kind of color blindness is inherited or genetic.
This means it is passed down to the child from parents, although it can often skip the generation. Some people only passed down the gene as carriers, but are not colorblind themselves.
The color blindness for green and red color is passed down with the X chromosome. As men have one X chromosome (and other Y) they will most likely inherit color blindness if their mother has it or is the carrier. Women, however, have two X chromosomes, so mother and father would have to have a color blindness X chromosome gene for a female child to be color blind.
Color blindness can also happen later in life due to injuries or diseases of the eyes and brain.