Question

Colour-blindness is caused due to recessive genes which occur on -

• A. Y chromosome
• B. X chromosome
• C. Autosome
• D. X and Y chromosome

Answer 1

The correct option is B X chromosome

X chromosome.

Colour-blindness is caused due to recessive genes which occur on the 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.