Which of the following steps are catalysed by Taq polymerase in a PCR reaction ?

Options

A. Denaturation of template DNA.
B. Annealing of primeres to template DNA
C. Extension of primer end on the template DNA
D. All of the above.

Explanation

### Step-by-Step Solution:

1. **Understanding PCR**:
- PCR stands for Polymerase Chain Reaction, which is a technique used to amplify a specific segment of DNA. The process involves repeated cycles of heating and cooling to facilitate the replication of DNA.

2. **Role of Taq Polymerase**:
- Taq polymerase is a thermostable enzyme derived from the bacterium Thermus aquaticus. It is crucial for the PCR process because it can withstand the high temperatures used during the reaction without denaturing.

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