NEET2026Zoology-Molecular Basis of Inheritance

NEET 2026 Zoology DNA and RNA Structure MCQ Question

Type: MCQ-conceptual-Easy-Class 12

The correct statement with regard to the secondary structure of DNA/RNA is

A

RNA possesses a single strand helix structure and contains thymine as one of the four bases

B

DNA possesses a double strand helix structure and contains thymine as one of the four bases

C

RNA possesses a double strand helix structure and contains uracil as one of the four bases

D

DNA possesses a single strand helix structure and contains uracil as one of the four bases

Correct Answer

Option B

Detailed Explanation

DNA is known for its double helix structure, where thymine pairs with adenine. RNA, on the other hand, is typically single-stranded and contains uracil instead of thymine.

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