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Anna007 [38]
3 years ago
5

If you isolate a single nucleotide from a nucleic acid and determine that the nitrogenous ring structure is cytosine (C), you co

uld say with certainty that the nucleotide could have come from______________.
Biology
1 answer:
iris [78.8K]3 years ago
8 0

Answer:

DNA or RNA

Explanation:

<em>Nucleotides are typically made up of phosphate group, nitrogenous bases and pentose sugars. They represent the building blocks of nucleic acids.</em>

<em>The nitogenous bases are of two types - purine and pyrimidine. Purine consists of adenine and guanine while pyrimidine consists of cytosine and thymine/uracil. </em>

<em>Both DNA and RNA consist of cytosine, adenine and guanine. However, thymine is only present in DNA and replaced by uracil in RNA.</em>

Hence, the cytosine could have come from either of DNA or RNA.

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