Question

A female would be colour blind only if ______.

Options

• only father is colour blind

• only mother is colour blind

• mother is a carrier and father is normal

• mother is a carrier and father is colour blind

Answer 1

A female would be colour blind only if mother is a carrier and father is colour blind.

Explanation:

Colour blindness is recessive and X-linked. A female must receive an affected X chromosome from both parents; a carrier mother and colour-blind father can provide these.