Which of the following is not present in a nucleotide?

Which of the following is not present in a nucleotide?
  1. Guanine
  2. Cytosine
  3. Adenine
  4. Tyrosine

Solution

Tyrosine is an $\alpha$ -amino acid, and neither a purine nor a pyrimidine base. ^

Asked in: JEE-TOPICTESTS-CHEMISTRY

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