The reason for double helical structure of DNA is operation…

Chemistry Biomolecules Vitamins, Hormone and Nucleic Acid Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 12, 2026

The reason for double helical structure of DNA is operation of

Vander Waal's forces

Dipole-dipole interaction

Hydrogen bonding

Electrostatic attractions

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The correct answer is:

The two polynucleotide chains of DNA molecules are twisted around a common axis but run in opposite directions to form a right handed helix. The two chains are joined together by specific hydrogen bonds.

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