Which among the following bond helps in the linkage of two nucleotides in a strand of DNA ?

5'-3' phosphodiester bond. 3'-7' phosphodiester bond. 3'-5' phosphodiester bond. 1'-3' phosphodiester bond.

3'-5' phosphodiester bond.

Two nucleotides are linked through 3'-5' phosphodiester linkage to form a dinucleotide. More nucleotides can be joined in such a manner to form a polynucleotide chain.