Question

Assertion :Human chromosomes have been studied through banding technique.
Reason: Banding technique is useful in studying chromosomal aberrations.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

Chromosomes are stained with special fluoroscent dyes that have differential affinity for different parts of the chromosomes. It brings about specific banding pattern. Bands are segments of stained chromosomes that appear lighter, darker or stained as compared to adjacent parts. Banding technique of chromosome staining is highly useful in knowing various types of chromosomal aberrations or abnormalities like additions, deletions and inversions.

So, the correct answer is 'Both Assertion and Reason are correct and Reason is the correct explanation for Assertion'.