DNA polymerase I is involved in :-

Options

A. Removal of RNA prime
B. Filling of gap
C. Joining of okazaki fragments
D. all of the above

Answer

**Step-by-Step Solution:**

1. **Understand the Role of DNA Polymerase I:**
- DNA polymerase I is an enzyme primarily found in prokaryotes. Its main functions include DNA repair and replication processes.

2. **Identify Key Functions:**
- The enzyme is involved in fixing or repairing DNA damage.
- It plays a crucial role in the removal of RNA primers during DNA replication.
- It fills in the gaps left after the removal of RNA primers, ensuring the DNA strand is continuous.

3. **Joining of Okazaki Fragments:**
- During DNA replication, especially on the lagging strand, Okazaki fragments are formed. DNA polymerase I helps in joining these fragments by filling in the gaps after RNA primers are removed.

4. **Evaluate the Options:**
- The options provided in the question likely include:
a) Removal of RNA primers
b) Filling of gaps
c) Joining of Okazaki fragments
d) All of the above
- Based on the functions discussed, all these options are correct.

5. **Conclude the Answer:**
- Therefore, the correct answer is "all of the above," as DNA polymerase I is involved in the removal of RNA primers, filling of gaps, and joining of Okazaki fragments.

**Final Answer:**
DNA polymerase I is involved in all of the above functions: removal of RNA primers, filling of gaps, and joining of Okazaki fragments.

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