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Question

Two nucleotides are linked through


A

5' - 3' Phosphodiester bond

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B

3' - 5' Phosphodiester bond

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C

2' - 3' Phosphodiester bond

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D

3' - 2' Phosphodiester bond

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Solution

The correct option is B

3' - 5' Phosphodiester bond


A phosphodiester bond is a linkage in which 3' phosphate group of a nucleoside is linked to the 5' hydroxyl group of another nucleoside. The direction is always from the 3' to 5' in nucleotides.


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