The correct option is(b) red-green colour blindness
Explanation:
The most common form of red-green colour blindness is an 'X chromosome-linked recession' disorder. The 'red' and 'green' genes are known to reside at the tip of the long arm of the X chromosome. Women have two copies of the X chromosome and so they have normal colour vision, even if they carry one copy of the detective gene. Men have only X-chromosome, and so will be colour blind.
