Four of the five answers listed below are components of a polymerase chain reaction.Select the EXCEPTION.
A) DNA template
B) primers
C) DNA ligase
D) Taq polymerase
E) nucleotides

Question

Quizplus · Accepted Answer

DNA ligase is not a component of PCR. The other four options are all essential components of the process. DNA template provides the starting material for amplification, primers bind to the template and define the region to be amplified, Taq polymerase extends the primers and synthesizes new DNA strands, and nucleotides are the building blocks for the new DNA strands. DNA ligase is not used in PCR, but instead is involved in another process, such as DNA ligation after fragmentation by restriction enzymes.

Four of the Five Answers Listed Below Are Components of a Polymerase