Q. Assertion (A): DNA is negatively charged.
Reason (R): It contains phosphate groups.

(A) Both A and R are true and R is correct
(B) Both A and R are true but R is not correct
(C) A is true but R is false
(D) A is false but R is true

✅ Correct Answer: (A) Both A and R are true and R is correct

Explanation: Phosphate backbone gives DNA negative charge.

Published by Mr. Dubey ⭐ 104.99K Points at 27-Apr-2026 05:46 am in Biology

Explanation by: Mr. Dubey

Phosphate backbone gives DNA negative charge.

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