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The coupling between base units of DNA i...

The coupling between base units of DNA is through

A

hydrogen bonding

B

electrostatic bonding

C

covalent bonding

D

van der waals' forces

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Verified by Experts

The correct Answer is:
A
In DNA the two strands are held together by hydrogen bonds. For example guanine is bonded to cytosine and adenine to thymine by hydrogen bonding
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