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Which of the following bond is not present in DNA?

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Which of the following bond is not present in DNA?

(a) Phosphate bond

(b) Hydrogen bond

(c) VanderWaal’s force

(d) Disulphide bond

This question was posed to me during an internship interview.

My enquiry is from Biological Molecules Structures and Functions in division Structures and Functions of Biological Molecules of Cell Biology

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The correct choice is (d) Disulphide bond

The best I can explain: Disulphide bond is not present in a DNA molecule. Phosphate bond is present between two deoxy-nucleotides (dNTPs) of DNA. The nitrogen bases on the two strands of DNA have hydrogen bonds between them. Adenine is connected Thymine by 2 hydrogen bonds, Guanine is bound to Cytosine by 3 hydrogen bonds. The base stacking in DNA is due to Vanderwaal’s force.

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