DNA is heated at the beginning of each PCR cycle to ____.
A)inactivate the DNA polymerase
B)allow primers to bind to template DNA
C)separate double-stranded DNA
D)allow a new nucleotide chain to be produced
E)denature contaminating proteins

Question

Quizplus · Accepted Answer

Heating the DNA at the beginning of each PCR cycle denatures (separates) the double-stranded DNA into single strands, which allows the primers to bind to the template DNA, initiating DNA synthesis by the DNA polymerase.

DNA Is Heated at the Beginning of Each PCR Cycle