Polymerase chain reaction
Polymerase chain reaction (PCR) is a technique that mimics natures way of replicating DNA. ... How it is done: - The selection of DNA to be duplicated is first isolated, and then placed into a reaction tube along with primers (short, synthetic pieces of single-stranded DNA that exactly match and flank the stretch of DNA to be amplified,) deoxynucleotide triphosphates (dNTPs, the building blocks of DNA), buffers and a heat-resistant enzyme (polymerase).