Western blotting is used for the identification of :-

Options

A. DNA
B. RNA
C. Protein
D. All of the above

Answer

**Step-by-Step Solution:**

1. **Understanding Western Blotting**: Western blotting is a laboratory technique used to detect specific proteins in a sample. It involves the separation of proteins by gel electrophoresis, followed by transfer to a membrane and detection using antibodies.

2. **Identifying the Options**: The question provides four options for what Western blotting identifies:
- Option 1: DNA
- Option 2: RNA
- Option 3: Protein
- Option 4: All of the above

3. **Differentiating Techniques**: It's important to note that different techniques are used for identifying different biomolecules:
- **Southern Blotting**: This technique is used specifically for the identification of DNA.
- **Northern Blotting**: This technique is used specifically for the identification of RNA.
- **Western Blotting**: This technique is specifically used for the identification of proteins.

4. **Conclusion**: Since Western blotting is specifically designed for the identification of proteins, the correct answer is:
- **Protein (Option 3)**.

5. **Eliminating Other Options**: The other options (DNA, RNA, and all of the above) can be eliminated based on the specific techniques used for their identification.

**Final Answer**: Western blotting is used for the identification of proteins.

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