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Gene mutation on the X chromosome is most common and also explains why (depending on nationality) some 7% of males, but less than 1% of females exhibit color blindness of some form. Males only have one X chromosome, whereas females have two.
Color blindness is a mutation on the X chromosome. If a woman is colorblind then all of her sons will be too since she passes on the X chromosome to them. As far as a daughter, both X chromosomes would have to be compromised as well because if one isnât then it can compensate for the other.