How was the genetic code discovered, and what role does it play in genetics today?

The genetic code is the set of rules that defines how a nucleotide sequence in mRNA is translated into an amino acid sequence in a protein. This code is universal and is conserved in all living organisms (with small exceptions) The genetic code is the code found in the cells of any organism, code that establishes the procedures that will be used to capture the characteristics of that organism and which will serve at the time of reproduction to account for the characteristics of a new living being.