In a DNA strand the nucleotides are linked together by

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glycosidic bonds

phosphodiester bonds

peptide bonds

hydrogen bonds

answer is B.

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Detailed Solution

A phosphate group is linked to OH of 5' C of a nucleoside through phosphoester linkage, a corresponding nucleotide(or deoxynucleotide depending upon the type of sugar present) is formed. 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.

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