nukleotidtripletter

Nukleotidtripletter, also known as codons, are sequences of three nucleotides that form the basic units of the genetic code. Each codon corresponds to a specific amino acid or a stop signal in protein synthesis. The nucleotides in a codon are represented by the letters A, U (in RNA), T (in DNA), C, and G, which stand for adenine, uracil (or thymine in DNA), cytosine, and guanine, respectively. The sequence of codons in a gene determines the sequence of amino acids in a protein. There are 64 possible codons, but only 20 of these code for specific amino acids, while the remaining 43 codons serve as stop signals to terminate protein synthesis. The genetic code is nearly universal across all living organisms, with only a few exceptions. The study of codons and their corresponding amino acids is fundamental to understanding gene expression and protein function.