The Polymerase Chain Reaction (PCR)is Used To

Question

The polymerase chain reaction (PCR)is used to
A)duplicate the chromosomes of bacteria.
B)produce billions of copies of a segment of DNA.
C)separate DNA fragments in an electromagnetic field.
D)stain fragments of DNA with a radioactive label.
E)determine the sequence of nucleotides in a segment of DNA.

Accepted Answer

PCR is a technique that produces many copies of a specific segment of DNA using a special enzyme called DNA polymerase. This allows for the targeted amplification of a particular gene or sequence of interest. Therefore, choice B is the correct answer. Choices A, C, D, and E are not accurate descriptions of PCR.