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Following are the features of genetic codes. What does each one indicate ? Stop codon, Unambiguous codon, Degenerate codon, Universal codon. |
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Answer» The features of genetic code are : (a) Stop codon : does not code for any amino acid / terminates the synthesis of polypeptide chain. (b) Unambiguous codon : one codon codes for one amino acid only. (c) Degenerate codon : some amino acid are coded by more than one codon. (d) Universal codon : genetic code is same for all organisms (bacteria to humans). Detailed Answer: The features of genetic codes are: (a) Stop codon : Termination codons or stop codons are UAA, UAG and UGA. They do not code for any amino acids They represent termination of translation. (b) Unambiguous codon : The genetic code is specific and non-ambiguous i.e. one codon specifies only one amino acid. (c) Degenerate codon : This indicates that a single amino acid is represented by many codons. (d) Universal codon : This indicates that one codon codes for the same amino acid in all species. From bacteria to human, UUU codes for phenyl alanine. |
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