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| Title: | Web Tutorial 19.2 The Polymerase Chain Reaction |
| Caption: | How can biologists produce large numbers of copies of a single DNA fragment, such as a gene? This tutorial illustrates the polymerase chain reaction (PCR), a powerful technique that, along with other advances, has allowed researchers to manipulate DNA sequences in organisms. |
| Keywords: | DNA polymerase, deoxynucleoside triphosphate, dNTP, nucleotide, polymerase chain reaction, PCR, primer, Taq polymerase |