DNA structure and function

Genetic Code

•The code is a 3-letter triplet code.

•Each sequence of 3 bases = 1 amino acid.

•e.g. ATG=Met, TTT=Lys (called a codon in mRNA)

•20 different amino-acids used to make proteins.

•Triplet codes for 43=64 (spares are repeats, stops, start is always Met)