Multiple choice Ti plasmid is used in genetic engineering. It is obtained from which of the following? Bacillus thuringiensis Agrobacterium tumefaciens Agrobacterium rhizogenes Escherichia coli - Reveal answer Fill a bubble to check yourself B Correct answer Explanation A Ti or tumour inducing plasmid is a plasmid that often, but not always, is a part of the genetic equipment that Agrobacterium tumefaciens uses to transduce its genetic material to plants.