DNA carries the "codes" that communicate what traits will be formed. The nucleotides in DNA are read and transcribed into mRNA which travels ot of the cells nucleus and then goes to a ribosome. In the ribosome, tRNA matches to mRNA with its anticodon. Each of the tRNA molecules are carrying an amino acid which are all connected by the ribosome to create an amino acid chain, which is a protein, which are traits in an organisms.