The polymerase chain reaction
A) can provide sufficient DNA for analysis from a small sample of biological material at the scene of a crime.
B) uses a restriction enzyme.
C) requires a heat-resistant polymerase.
D) can provide sufficient DNA for analysis from a small sample of biological material at the scene of a crime and requires a heat-resistant polymerase.
E) uses a restriction enzyme and can provide sufficient DNA for analysis from a small sample of biological material at the scene of a crime.

Question

Quizplus · Accepted Answer

The polymerase chain reaction (PCR) requires a heat-resistant polymerase to amplify DNA and can provide sufficient DNA for analysis from a small sample of biological material at the scene of a crime. It does not use a restriction enzyme, as its purpose is to make many copies of a specific DNA sequence rather than cut DNA at specific sites.

The Polymerase Chain Reaction