Identify the statements which are true with respect to colour blindness

A. Sex-linked recessive disorder
B. Sufferers are unable to differentiate between red or green colour
C. It occurs in 8% males and 0.4% females.
D. The defect is due to the mutation in genes present on "Y" chromosome

Choose the correct answer from the options given below:

A, B and C only

The correct answer is Option (3) → A, B and C only

Color Blindness: It is a sex-linked recessive disorder due to defect in either red or green cone of eye resulting in failure to discriminate between red and green colour. This defect is due to mutation in certain genes present in the X chromosome. It occurs in about 8 per cent of males and only about 0.4 per cent of females. This is because the genes that lead to red-green colour blindness are on the X chromosome. Males have only one X chromosome and females have two. The son of a woman who carries the gene has a 50 per cent chance of being colour blind. The mother is not herself colour blind because the gene is recessive. That means that its effect is suppressed by her matching dominant normal gene. A daughter will not normally be colour blind, unless her mother is a carrier and her father is colour blind.