The salient features of genetic code are as follows:
1. The codon is triplet. 61 codons code for amino acids and 3 codons do not code for any amino acids, hence they function as stop codons.
2. One codon codes for only one amino acid, hence, it is unambiguous and specific.
3. Some amino acids are coded by more than one codon, hence the code is degenerate.
4. The codon is read in mRNA in a contiguous fashion. There are no punctuations. 5. The code is nearly universal.
6. AUG has dual functions. It codes for Methionine (met) , and it also act as initiator codon.