The Polymerase Chain Reaction This lesson describes the Polymerase Chain Reaction, a method of repeatedly copying (amplifying) a small sample of DNA in order to have enough volume of DNA to do a variety of other procedures.   DNA replication, transcription, and translation This is a summary of how DNA copies itself, and how information moves from DNA to guide the assembly of a particular protein.      Dolan DNA Learning Center - Gene Almanac  DNA from the Beginning  Your Genes, Your Health  Image Archive of the American Eugenics Movement  Access Excellence  Biointeractive     More...