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Answer» 1. The codon is a triplet.
2. There are 64 codons of which only 61 are coding and 3 act as stop codons and do not CODE for any amino acid.
3. One codon codes for only 1 amino acid. Thus, it is unambiguous and specific.
4. A single amino acid may be coded by more than one codon. Thus, it is degenerate.
5. A codon is universal i.e., from bacteria to human beings, UUU codes for PHENYLALANINE (phe). However exceptions have been found in some mitochondria and protozoans.
6. A codon in mRNA is read in a contiguous fashion i.e., without any punctuation.
7. The codon AUG has dual FUNCTIONS. It codes for Methionine (MET) as well as acts as the initiator codon.
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