NEET Biology
NEETBiologyMolecular Basis of InheritanceClass 12

I keep getting “Genetic code” questions wrong in Molecular Basis of Inheritance. What's the trap?

thinking one codon can code for several amino acids.

The usual trap: thinking one codon can code for several amino acids. How to avoid it: 64 codons for 20 amino acids -> many codons per amino acid, never the reverse. Go back to the definition — a triplet, degenerate, non-overlapping and near-universal code with AUG as start and three stop codons.

Key point

Genetic code

Common mistake

thinking one codon can code for several amino acids.

Memory tip

64 codons for 20 amino acids -> many codons per amino acid, never the reverse.

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