Engineering
Chemistry
IUPAC Nomenclature of Organic Compound
Basic concepts of organic chemistry
Amino Acid and Proteins
Question
Which one of the following bases is not present in DNA?
Know your College Admission Chances Based on your Rank/Percentile, Category and Home State.
Get your JEE Main Personalised Report with Top Predicted Colleges in JoSA
Solution
DNA contains four nitrogenous bases: adenine (A), thymine (T), cytosine (C), and guanine (G). These pair specifically (A-T and C-G) to form the double helix structure. Quinoline is an aromatic heterocyclic organic compound, not a biological nucleotide base. It is not a component of DNA or RNA.
Final Answer: Quinoline