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  • The 3'-5' phosphodiester linkages inside a polynucleotide chain serve to joinOption: 1 One DNA strand with the other DNA strand

The 3'-5' phosphodiester linkages inside a polynucleotide chain serve to join

Option: 1

One DNA strand with the other DNA strand


Option: 2

One nucleoside with another nucleoside


Option: 3

One nucleotide with another nucleotide


Option: 4

One nitrogenous base with pentose sugar


Answers (1)

best_answer

Each strand of DNA is made up of several nucleotides. Contiguous nucleotides of the same strand are linked by 3'-5' phosphodiester bonds, ie. 3' carbon from one sugar and 5' carbon from another sugar. This bond is a strong covalent bond formed by a phosphate group and the ester groups on two pentose sugars. Hence option 2 is correct.

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SANGALDEEP SINGH

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