Agrobacterium tumefaciens used in genetic engineering for :

Options

A. DNA- mapping
B. DNA- modification
C. Vector
D. DNA finger printing

Answer

**Step-by-Step Solution:**

1. **Understanding Agrobacterium tumefaciens**:
- Agrobacterium tumefaciens is a soil bacterium known for its ability to transfer genetic material to plants. This bacterium is significant in the field of genetic engineering.

**Hint**: Think about the natural role of Agrobacterium in plant interactions.

2. **Role of Plasmids**:
- Agrobacterium contains extra chromosomal DNA known as plasmids. These plasmids are crucial for the genetic manipulation process.

**Hint**: Recall what plasmids are and their function in genetic engineering.

3. **T.I. Plasmid**:
- The specific plasmid in Agrobacterium tumefaciens is called the T.I. (Tumor Inducing) plasmid. This plasmid is responsible for causing tumors in plants, which is a result of the bacterium transferring part of its DNA into the plant cells.

**Hint**: Consider why the T.I. plasmid is significant in plant biotechnology.

4. **Use in Genetic Engineering**:
- The T.I. plasmid can be modified to carry desired genes that can be introduced into plant cells. This makes Agrobacterium tumefaciens a valuable tool as a vector in genetic engineering.

**Hint**: Think about the definition of a vector in the context of genetic engineering.

5. **Conclusion**:
- Therefore, the primary use of Agrobacterium tumefaciens in genetic engineering is as a vector for transferring genes into plants.

**Final Answer**: Agrobacterium tumefaciens is used in genetic engineering as a vector.

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