Multiple choice

PCR is used for

  1. making multiple copies of a gene

  2. detection of HIV

  3. diagnosis of heart disease

  4. detection of lung diseases

  5. detection of lactose intolerance
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A Correct answer
Explanation

The polymerase chain reaction (PCR) is a technique used in molecular biology to amplify a single copy or a few copies of a piece of DNA across several orders of magnitude, generating thousands to millions of copies of a particular DNA sequence.

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