Answer:
Polymerase chain reaction (PCR)
Explanation:
PCR is a technique used to create many copies (amplify) of small segments of DNA. In order to achieve first, the DNA must be denaturalized with heat forming two strands that will serve as templates for the Taq polymerase, an enzyme that will duplicate de original DNA. This cycle is repeated 30 to 40 times to get as many copies as possible.
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