Which of the Following Devices is Used for PCR

Question

Which of the following devices is used for PCR?
A) an electrophoresis chamber
B) a gene gun
C) a DNA sequencer
D) a thermocycler
E) a nucleic acid synthesis machine

Accepted Answer

PCR (polymerase chain reaction) is a process used to amplify small amounts of DNA into larger quantities for analysis. PCR requires a thermocycler, which is a device that can rapidly change the temperature of the reaction mixture to promote DNA denaturation (separation of the double-stranded DNA into single strands), annealing (binding of primers to the single-stranded DNA), and extension (synthesis of new DNA strands). Therefore, the best choice for a device used in PCR is a thermocycler (choice D).