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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 |
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Answer» 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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