Question

Assertion :Red-green colour blindness occurs with more frequency in males than in females. Reason: Females have two X chromosomes and males have one.

• A. Both A and R are true and R is the correct explanation of A
• B. Both A and R are true but R is not a correct explanation of A
• C. A is true but R is false
• D. A is false but R is true

Answer 1

The correct option is A Both A and R are true and R is the correct explanation of A

Men are much more likely to be colourblind than women because Males only have one X chromosome, while females have two X chromosomes.

So, the correct option is 'Both A and R are true and R is the correct explanation of A'.