DNA exchanges its thymine units with uracil in polymerase. This activates polymerase, and it starts joining amino acids together.

Messenger RNA is made on a DNA template, and then amino-acid-bearing transfer RNAs bind to the mRNA through codon-anticodon pairing.

Replicated DNA leaves the nucleus, is transported to a ribosome, and catalyzes the polymerization of amino acids in a protein.

Transfer RNAs line up on a ribosome, and amino acids bind to them with hydrogen bonds.