Nitrogenous bases, a pentose sugar, and phosphate groups altogether form a nucleotide . Four major nucleotides present in the DNA are adenine, guanine, cytosine and thymine. Adjacent nucleotides are linked by phosphodiester bonds whereas the nucleotides on the complementary strand are linked by the hydrogen bonds.

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Chapter 3.3, Problem 3.2TYU

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Nitrogenous bases, a pentose sugar, and phosphate groups altogether form a nucleotide. Four major nucleotides present in the DNA are adenine, guanine, cytosine and thymine. Adjacent nucleotides are linked by phosphodiester bonds whereas the nucleotides on the complementary strand are linked by the hydrogen bonds.

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