1. Triplet nature: Each codon is made of three nitrogenous bases. There are 64 codons in total. 2. Universal: The code is nearly universal; for example, from bacteria to humans, UUU codes for Phenylalanine. 3. Degenerate: Some amino acids are coded by more than one codon. 4. Non-overlapping and Commaless: The code is read in mRNA in a contiguous fashion without any punctuation. 5. Initiation and Termination: AUG acts as the initiator codon. UAA, UAG, and UGA are stop (nonsense) codons.