DNA polymerase is needed for

Options

A. Replication of DNA
B. synthesis of DNA
C. elongation of DNA
D. All of the above

Answer

**Step-by-Step Solution:**

1. **Understanding DNA Polymerase**: DNA polymerase is an enzyme that plays a crucial role in the process of DNA replication. It is responsible for synthesizing new DNA strands by adding nucleotides to a growing DNA chain.

2. **Analyzing the Options**:
- **Replication of DNA**: This is the process where the entire DNA molecule is copied to produce two identical DNA molecules. DNA polymerase is essential for this process.
- **Synthesis of DNA**: This refers to the creation of new DNA strands, which is directly carried out by DNA polymerase during replication.
- **Elongation of DNA**: This is the phase of DNA replication where the DNA strand is lengthened by the addition of nucleotides. DNA polymerase facilitates this elongation.

3. **Conclusion**: Since DNA polymerase is involved in all three processes—replication, synthesis, and elongation of DNA—it is correct to say that it is needed for all of the above.

4. **Final Answer**: Therefore, the answer to the question is "all of the above."

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