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

Agrobacterium tumefaciens harbors the tumor-inducing (Ti) plasmid, a large extrachromosomal element. This plasmid facilitates the transfer of a DNA fragment into plant cells, inducing crown gall tumor formation. The Ti plasmid serves as a crucial tool in plant genetic engineering for introducing novel genes into plants.
Scientists leverage the Ti plasmid's inherent DNA transfer mechanism to modify plant genomes. By substituting the genes responsible for tumor induction with target genes, researchers can develop genetically engineered plants possessing advantageous characteristics like enhanced pest resistance or improved crop yield.