Question

Assertion: Haemophilia never occurs in women.

Reason: Gene for haemophilia is located on X chromosome.

• A. If both the assertion and the reason are true and the reason is a correct explanation of the assertion
• B. If both the assertion and reason are true but the reason is not a correct explanation of the assertion
• C. If the assertion is true but the reason is false
• D. If both the assertion and reason are false
• E. If the assertion is false but reason is true

Answer 1

Answer: (E)

If the assertion is false but reason is true

Haemophilia occurs in both male and female. It is a sex linked disease with the gene present on the X chromosome. For a female to be haemophilic both the chromosomes must carry haemophilic gene, therefore women are affected due to homozygous condition while males are affected in hemizygous condition.

Since, both women and men affected assertion is false, reason is true

So, the correct answer is 'If the assertion is false but reason is true'