Question:
Given below are two statements:
Statement I: Virulence trait of Agrobacterium tumefaciens is borne on genomic DNA.
Statement II: The technique used to introduce genes in dicot is Ti-plasmid infection.
Given below are two statements:
Statement I: Virulence trait of Agrobacterium tumefaciens is borne on genomic DNA.
Statement II: The technique used to introduce genes in dicot is Ti-plasmid infection.
Statement I: Virulence trait of Agrobacterium tumefaciens is borne on genomic DNA.
Statement II: The technique used to introduce genes in dicot is Ti-plasmid infection.
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Ti = Tumor Inducing. It is a plasmid (extra DNA), not part of the bacterial chromosome.
Updated On: May 14, 2026
- Both Statement I and Statement II are true.
- Both Statement I and Statement II are false.
- Statement I is true but Statement II is false.
- Statement I is false but Statement II is true.
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The Correct Option is D
Solution and Explanation
Step 1: Concept
Agrobacterium tumefaciens is a soil bacterium known for its natural ability to transfer DNA into plant cells.
Step 2: Meaning
The virulence (ability to cause tumors) is primarily determined by specific genes located on a large extrachromosomal element.
Step 3: Analysis
Statement I is false because the virulence genes are located on the Ti (Tumor-inducing) plasmid, not the main genomic DNA. Statement II is true because the Ti-plasmid is the standard vector used for stable transformation of dicotyledonous plants.
Step 4: Conclusion
Since the first statement is incorrect regarding the location of virulence traits and the second is a standard fact in plant biotechnology, option D is correct. Final Answer: (D)
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