Question

Ti plasmid is obtained from $\_\_\_\_$

• A. Escherichia coli
• B. Agrobacterium tumefaciens
• C. Bacillus subtilis
• D. Saccharomyces cerevisiae

Hint:

Agrobacterium tumefaciens utilizes the Ti plasmid to transfer genetic material to plants, a mechanism that has been harnessed for creating genetically modified plants.

Answer 1

The Correct Option is B

The Ti (tumor-inducing) plasmid is a large plasmid found in the bacterium Agrobacterium tumefaciens. This plasmid is responsible for transferring a segment of its DNA into plant cells, causing the formation of crown gall tumors. The Ti plasmid is widely utilized in plant genetic engineering to introduce new genes into plants. 
Researchers exploit the Ti plasmid's natural ability to transfer DNA to manipulate plant genomes. By replacing the tumor-inducing genes with desired genes, scientists can create genetically modified plants with beneficial traits, such as pest resistance or increased yield.