Nucleobase - Definition

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Definition


A nucleobase is one of the molecules of a nucleotide that carries information. It is also a component of DNA and RNA. The helix strands of DNA are connected between themselves by pairs of nucleobases. The five principal nucleobases found in DNA and RNA are adenine, cytosine, guanine, thymine and uracil (present only in RNA). The nucleus of the nucleobase is called purine.

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