The ________ Gene Products Stimulate Plasmid Transfer from Agrobacterium to the Host

Question

The ________ gene products stimulate plasmid transfer from Agrobacterium to the host plant.
A) Ti
B) promoter
C) recombinant
D) auxin synthesis
E) vir

Accepted Answer

The vir gene products are responsible for stimulating plasmid transfer from Agrobacterium to the host plant. The Ti (tumor-inducing) plasmid is necessary for the transfer process to occur, but it is the vir genes that encode for the transfer machinery and other factors that promote the transfer process. Therefore, choice E, vir, is the best answer.