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Which of the following is a cloning vector?

Options

  1. ADNA of Salmonella typhimurium
  2. BTi plasmid
  3. CAmp ^r and Tet ^r loci
  4. DOri minus pBR322

Correct answer

B. Ti plasmid

Step-by-step solution

The DNA used as a carrier for transferring a fragment of foreign DNA into a suitable host is called vehicle DNA or cloning vector or gene carrier. The Ti plasmid (tumour inducing plasmid) is present in Agrobacterium tumefaciens, a Gram negative soil bacterium that infects a wide range of plants and causes tumorous growth specially at the root/stem junction (crown gall). The Ti plasmid comprises the gene responsible for the tumorous growth, gets incorporated into the genome of infected plant cells. This property is

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