Question

Selected the vectors which have the ability to incomplete a foreign DNA in chromosomal DNA of plant cell.

• A. Disarmed Ti plasmid
• B. $pBR322$
• C. Bacteriophage
• D. Both (1) and (2).

Answer 1

The correct option is A Disarmed Ti plasmid

Vectors are the agent that helps in transporting the DNA to the host cell for multiplication of the alien DNA.

The choice of the vector can be a bacteriophage or plasmids. Bacteriophages infect bacteria and are a type of viruses.

pBR322 is a cloning vector for E.coli and is used for it.

The Ti plasmids which are obtained from Agrobacterium tumefaciens is the vector which is used to introduce new genes into plant cells.

It gets its name as tumour-inducing plasmid because it induces a tumour in the broadleaf plant.

So, the correct option is 'Disarmed Ti plasmid'.