NEET Botany Molecular Basis of Inheritance Questions Solved

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Following are the features of genetic codes. What does each one indicate ? Stop codon; Unambiguous codon; Degenerate codon; Universal codon.               (2 marks)

Stop codon : It does not code for any amino acid. It terminates the synthesis of polypeptide chain, for example, UGA, UAA, UAG.

Unambiguous codon : One codon codes for only one amino acid.

Degenerate codon : Some amino acids are coded by more than one codon, for example, ACU, ACC codes for threonine.

Universal codon : Genetic code is same for all organisms, for example, UUU codes for Phenylalanine (phe) in bacteria as well as in humans.

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