Enzyme required for polymerase chain reaction (PCR) is

Options

A. RNA polymerase
B. Ribonuclease
C. Taq polymerase
D. Endonuclease

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks for the enzyme required for the Polymerase Chain Reaction (PCR).

2. **Identifying the Options**: The options given are:
- A) RNA polymerase
- B) Ribonuclease
- C) Taq polymerase
- D) Endonuclease

3. **Analyzing Each Option**:
- **RNA polymerase**: This enzyme synthesizes RNA from a DNA template but is not used in PCR.
- **Ribonuclease**: This enzyme degrades RNA and is not relevant to DNA amplification in PCR.
- **Taq polymerase**: This is a specific type of DNA polymerase that is heat-stable and is used in PCR to synthesize new DNA strands.
- **Endonuclease**: This enzyme cuts DNA at specific sites but is not used for amplifying DNA in PCR.

4. **Selecting the Correct Answer**: Based on the analysis, Taq polymerase is the enzyme specifically required for PCR due to its thermostability, allowing it to function at the high temperatures used during the process.

5. **Conclusion**: The correct answer is **C) Taq polymerase**.

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