Where does codon code come from?

Codon code originates from the genetic code, which is a set of rules that dictates how sequences of nucleotides in DNA and RNA correspond to specific amino acids in proteins. Each codon consists of three nucleotide bases and specifies a particular amino acid or a stop signal during protein synthesis. This code is universal across nearly all living organisms, reflecting a common evolutionary heritage. The concept and understanding of codons were developed through early genetic research, including experiments by scientists like Marshall Nirenberg in the 1960s.