Which Sequence Presents the Three Stages of a PCR in the Correct

Question

Which sequence presents the three stages of a PCR in the correct order?
A) annealing
B) extension
C) denaturation
D) denaturation.

Accepted Answer

PCR involves three steps: denaturation, annealing, and extension. Denaturation is the first step, where the DNA is heated to separate the two strands. Annealing is the second step, where the primers bind to the complementary sequences on the DNA strands. Extension is the third step, where the DNA polymerase extends the primers to create new DNA strands.