Which of the following statements are correct with respect …

Biology NEET Previous Year Question Paper NEET 2026 Previous Year Question Paper Single Correct MCQ

Published on: August 21, 2026

Which of the following statements are correct with respect to DNA separation, isolation and visualization?

The cutting of DNA is done by molecular scissors.
A and B only

The DNA fragments separate according to their size in an agarose gel, upon electrophoresis.
B and D only

The separated DNA fragments can be seen without staining when exposed to UV light.
A and D only

The separated DNA fragments, when stained with ethidium bromide, can be seen in visible light. Choose the correct answer from the options given below:
B and C only

Text Solution

Verified by Experts

The correct answer is:

Correct: Restriction endonucleases are called molecular scissors as they cut DNA.

Correct: Fragments separate by size in agarose gel; smaller ones move farther.

False: DNA is invisible to the naked eye/UV light without staining.

False: Stained DNA (with Ethidium bromide) must be exposed to UV light (not visible light) to appear as bright orange bands.

Previous Question Next Question

Prepare Smarter with CGP Edu

Get practice questions, solutions, and test series in one place.

Write a Review

Share your experience with this question and solution.

Commentary

Send your comment, doubt, correction, or feedback to admin.

Student Reviews

What students say about this solution

No reviews yet. Be the first to write a review.

Share this question

Text Solution

Prepare Smarter with CGP Edu

Write a Review

Commentary

Student Reviews

Similar Questions