Question 13
PCR, or Polymerase Chain Reaction, is used to take a section of DNA and force it to

a. Move down a gel
b. Add a mutation
c. Cut itself
d. Copy itself
e. Expand itself

Copy itself

Explanation:

When scientists wants to take a very small sample of DNA and amplify it to a large enough amount to study in detail, Polymerase chain reaction (PCR) is the method they use. In molecular biology, PCR is widely use to rapidly make millions to billions of copies of a specific DNA sample.

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