Question

Agrobacterium is widely used for gene transfer because

A Agrobacterium tumefaciens is a widespread naturally occurring soil bacterium that causes crown gall
B has the ability to introduce new genetic material into the plant cell with relatively high efficiency.
C The genetic material that is introduced is called T DNA (transferred DNA) which is located on a Ti plasmid. A Ti plasmid is a circular piece of DNA found in almost all bacteria.
D The presence of gall represents the manifestation of transfer and expression of additional DNA in plant cells.
E All of these
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