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The classic red-green color blindness is carried on the X chromosome.

Men get the x from their mother and the y from their father. If the x has the bad gene then they will be color blind.

If a woman gets the gene from her mother she will be a carrier and able to pass it to her sons (or the carrier state to her daughters) but will be able to see because she has a good gene on the other x chromosome.

There are other forms of color blindness that are inherited in other ways so women can be color blind.

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14y ago

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