MCQ Microbiology Answer 38
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The answer is: A
PCR is a widely used tool for amplification of small pieces of nucleic acid present in minute quantities. Once the sequence to be amplified is known, a specific primer is added. The temperature is alternately raised and lowered up to 45 to 50 times in the presence of a heat-resistant DNA polymerase from T. aquaticus. The amplified gene product is then detected by one of a number of techniques.
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