Question

Colour blindness occurs due to ___________.

• A. Recessive gene on X-chromosome
• B. Dominant gene on X-chromosome
• C. Recessive gene on an autosome
• D. Dominant gene on an autosome

Answer 1

The correct option is A Recessive gene on X-chromosome

The most common type of red-green color perception defect is due to a mutation on the X-chromosome (i.e. a red-green color blind allele). X-linked red-color blindness is a recessive trait.

So, the correct answer is 'Recessive gene on X-chromosome'.