Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYMolecular Basis of Inheritance1 Mark
MCQ
A codon is made up of:
A
Single nucleotide
B
Two nucleotides
✓
Three nucleotides
D
Four nucleotides
✓
Answer
Correct option: C.
Three nucleotides
A sequence of three nucleotides in messenger $\text{RNA}$ makes a codon for an amino acid. A codon is a sequence of three adjacent nucleotides constituting the genetic code that determines the insertion of a specific amino acid in a polypeptide chain during protein synthesis or the signal to stop protein synthesis. A codon is defined by the initial nucleotide from which translation starts.
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