Mark the correct option (w.r.t function of RNAP-I)

Options

A. 5.8S rRNA
B. 5S rRNA
C. SnRNA
D. ScRNA

Answer

To solve the question regarding the function of RNA polymerase I (RNAP-I), we will follow a step-by-step approach:

### Step-by-Step Solution:

1. **Understand the Role of RNA Polymerases**:
- RNA polymerases are enzymes that synthesize RNA from a DNA template during the process known as transcription.

2. **Identify the Specific Functions of RNA Polymerase I**:
- RNA Polymerase I (RNAP-I) is primarily responsible for synthesizing ribosomal RNA (rRNA), specifically the 28S, 18S, and 5.8S rRNA components in eukaryotic cells.

3. **Differentiate Between RNA Polymerases**:
- RNA Polymerase II (RNAP-II) synthesizes messenger RNA (mRNA) and some small nuclear RNAs (snRNA).
- RNA Polymerase III (RNAP-III) is responsible for synthesizing transfer RNA (tRNA) and 5S rRNA.

4. **Evaluate the Options Given**:
- The question asks to mark the correct option with respect to the function of RNA Polymerase I.
- Since RNAP-I is responsible for synthesizing 28S, 18S, and 5.8S rRNA, the correct option would be the one that mentions these specific types of RNA.

5. **Select the Correct Option**:
- Based on the information, the correct answer is the option that states RNA Polymerase I synthesizes 5.8S rRNA, along with 28S and 18S rRNA.

### Final Answer:
The correct option regarding the function of RNA Polymerase I is **5.8S rRNA**.

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