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MHT CET Medical202621 April 2026Morning ShiftBiologyMolecular Basis of InheritanceActual

In a DNA strand, the nucleotides are linked together by-----------.

Options

  1. AGlycosidic bond
  2. BPhosphodiester bond
  3. CPeptide bond
  4. DHydrogen bond

Correct answer

B. Phosphodiester bond

Step-by-step solution

In a DNA strand, adjacent nucleotides are joined together by phosphodiester bonds. This bond is formed between the 3' carbon atom of the pentose sugar of one nucleotide and the 5' carbon atom of the pentose sugar of the adjacent nucleotide through a phosphate group. Glycosidic bonds link a nitrogenous base to a pentose sugar. Peptide bonds link amino acids in a polypeptide chain. Hydrogen bonds link the complementary nitrogenous bases of two opposite DNA strands. Answer: Phosphodiester bond

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