Question

The Ti plasmid of Agrobacterium tumefaciens contains a transposon called:

• A. T DNA
• B. R DNA
• C. cDNA
• D. A DNA

Hint:

The Ti plasmid is engineered such that the T-DNA region can be replaced with any desired foreign gene, which can then be inserted into the host plant’s genome. The T-DNA is transferred to plant cells, where the introduced gene is expressed, thus allowing for genetic modification.

Answer 1

The Correct Option is A

The tumor-inducing (Ti) plasmid of Agrobacterium tumefaciens contains a Transfer DNA (T-DNA) segment. During infection, this T-DNA transfers from the bacterium to the plant genome, carrying genes essential for plant tumor growth. R, cDNA, and A DNA are unrelated to the Ti plasmid.