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+1 vote
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in Biomolecules by (30.0k points)
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The reason for double helical structure of DNA is opration of 

(a) van der Waals' forces

(b) dipole-dipole interaction 

(c) hydrogen bonding

(d) electrostatic attractions

1 Answer

+2 votes
by (55.2k points)
edited by
 
Best answer

Correct Option (c) hydrogen bonding

Explanation:

Hydrogen bonding is involved as a molecular force in the DNA molecule.

Watson and Crick observed the purine- pyrimidine type of hydrogen bonding (instead of purine-purine and pyrimidine-pyarimidine type).

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