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PCR, the polymerase chain reaction, is a method by which any piece of DNA can be quickly copied many times without using cells. ... With automation, PCR can make billions of copies of a targeted segment of DNA in a few hours, significantly faster than the days it takes to clone a piece of DNA by making a recombinant plasmid and letting it replicate within bacteria. ... In the PCR procedure, a three-step cycle brings about a chain reaction that produces an exponentially growing population of DNA molecules.
Approximate Word count = 423 Approximate Pages = 1.7 (250 words per page double spaced)
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