Which of the following does not confer stability to the helical structure of DNA?

Phosphodiester bond

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H-bond

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N-glycosidic linkage

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More than one option is correct

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Solution

The correct option is C N-glycosidic linkage
DNA is a helical structure where different nucleotides are joined by a phosphodiester bond. While base pairs from opposite strands are joined by hydrogen bond. They help in stabilizing DNA molecule.
N- glycosidic linkage In DNA, is the nitrogen-carbon linkage between the nitrogen of purine or pyrimidine bases and the carbon of the sugar group. This bond does not provide stability.
So, the correct option is 'N-glycosidic linkage'.

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