JEE Main · 2024 · 27 Jan 2024 · Shift 1 · Biomolecules

Two nucleotides are joined together by a linkage known as :

(A)Phosphodiester linkage✓ Correct
(B)Glycosidic linkage
(C)Disulphide linkage
(D)Peptide linkage

Answer: (A)

Solution

Two nucleotides are joined by a phosphodiester linkage: the

3^{'}

-OH of one nucleotide's sugar condenses with the

5^{'}

-phosphate of the next, releasing water and building the sugar–phosphate backbone of DNA/RNA. A glycosidic bond instead links the base to its own sugar within a single nucleotide, so it is not the answer.

JEE Main · 2024 · 27 Jan 2024 · Shift 1 · Single correct option

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