Transcription is the synthesis of m.RNA from a DNA in cell nucleus. It resembles the DNA replication. DNA contains the sequence of bases called pramotor sites. These pramotor sites are bound to the enzyme which initiates the m.RNA synthesis
Enzyme required for transcription

Options

A. Restriction enzyme
B. DNA polymerase
C. RNA polymerase
D. RNA ase

Explanation

**Step-by-Step Solution:**

1. **Understanding Transcription**: Transcription is the process of synthesizing messenger RNA (mRNA) from a DNA template. This occurs in the cell nucleus and is a crucial step in gene expression.

2. **Identifying the Enzymes**: In the context of molecular biology, different enzymes are involved in various processes:
- **Restriction Enzymes**: These are used to cut DNA at specific sequences but are not involved in transcription.
- **DNA Polymerase**: This enzyme is responsible for DNA replication, where it synthesizes new DNA strands from a DNA template.
- **RNA Polymerase**: This is the enzyme specifically responsible for synthesizing RNA from a DNA template during transcription.
- **Ribonuclease (RNAse)**: This enzyme degrades RNA molecules but is not involved in the synthesis of RNA.

3. **Central Dogma of Molecular Biology**: According to the central dogma proposed by Francis Crick, the flow of genetic information is from DNA to RNA to protein. This means:
- DNA replication involves DNA polymerase.
- Transcription involves RNA polymerase.
- Translation involves ribosomes and various other factors.

4. **Conclusion**: Since the question specifically asks for the enzyme required for transcription, the correct answer is RNA polymerase, as it synthesizes mRNA from the DNA template.

**Final Answer**: The enzyme required for transcription is **RNA polymerase**.

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