The polymerase chain reaction is used to amplify specific fragments of DNA in vitro.

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The polymerase chain reaction (PCR) is a widely used technique for amplifying specific regions of DNA in vitro. PCR can be used for a variety of applications, including DNA sequencing, genotyping, and gene expression analysis. PCR amplification involves using a pair of primers that flank the target region of DNA, as well as a thermostable DNA polymerase, to produce millions of copies of the target DNA sequence.

The Polymerase Chain Reaction Is Used to Amplify Specific Fragments