- A Acidic amino acids
- B Basic amino acids
- C Sulphur-containing amino acids
- D Aromatic amino acids
Correct answer: B. Basic amino acids
Explanation: Histones are rich in basic amino acids like lysine and arginine, giving them a net positive charge that lets them bind the negatively charged DNA.
Concept context
DNA structure, replication, transcription, translation, the genetic code, and gene regulation (lac operon). The single most important chapter for NEET molecular biology.