polymerase chain reaction definition

  • noun:
    • A technique for amplifying DNA sequences in vitro by isolating the DNA into two strands and incubating it with oligonucleotide primers and DNA polymerase. It may amplify a certain sequence of DNA by as many as one billion times and it is important in biotechnology, forensics, medicine, and hereditary analysis.
    • a method in molecular biology for producing several copies of DNA from an example; found in genetic fingerprinting an such like

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