Final answer:
The statement is false; Vir genes are not located on the T-DNA but are part of the Ti plasmid that facilitates the transfer of T-DNA into plant cells to produce transgenic plants.
Step-by-step explanation:
The statement 'Vir genes of the Ti plasmid are located on the T-DNA and are transferred to the plant' is false. In the process of creating transgenic plants, researchers use the Ti plasmid from the bacterium Agrobacterium tumefaciens as a shuttle vector. However, the Vir (virulence) genes are not located on the T-DNA segment that is transferred to the plant cells. Instead, they are located elsewhere on the Ti plasmid and are involved in the process of transferring the T-DNA to the plant cell. The T-DNA is the specific segment of the Ti plasmid that gets integrated into the plant's genome, and it can be modified by researchers to contain genes of interest, such as those conferring antibiotic resistance or other useful traits.