This is a chart that may be used to hold reference information about the genetic code. It represents the nucleotides and amino acids on opposite sides of the table, as well as where they might be found. Basically, it’s a tool for understanding how DNA translates to RNA and mRNA. The first two columns represent places on an imaginary single strand of DNA that are separated by three nucleotides bases (called triplets). On either side of this strand one finds the corresponding 3-digit number representing an amino acid or codon which tells what sequence in order to make up protein synthesis. Such 4 letters representation is often called “Genetic Code”.