Most common method of gene transfer in plants is

Options

A. Southern blotting
B. Northern blotting
C. Electrophoresis
D. Infection by Agrobacterium

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Question**: The question asks for the most common method of gene transfer in plants.

2. **Identifying the Options**: The options provided are:
- A. Southern Blotting
- B. Northern Blotting
- C. Electrophoresis
- D. Injection by Agrobacterium

3. **Analyzing the Options**:
- **Southern Blotting**: This is a technique used for detecting specific DNA sequences in DNA samples. It is not a method for gene transfer.
- **Northern Blotting**: This technique is used for detecting specific RNA sequences. It is also not a method for gene transfer.
- **Electrophoresis**: This is a method used to separate DNA, RNA, or proteins based on their size and charge. It does not involve gene transfer.
- **Injection by Agrobacterium**: Agrobacterium tumefaciens is a bacterium that can transfer DNA to plant cells, specifically a segment of its DNA known as T-DNA, which integrates into the plant genome.

4. **Conclusion**: The most common method of gene transfer in plants is through the injection by Agrobacterium tumefaciens, as it is specifically adapted to transfer genetic material into plant cells.

5. **Final Answer**: The correct answer is **D. Injection by Agrobacterium**.

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