Transgenesis involves introducing nematode-specific genes from Agrobacterium into plant cells. It produces sense and antisense RNA in plant cells. They are complementary to each other to form double stranded RNA. It is cleaved into 21-23 fragments by Dicer enzyme. Each fragment is called small interfering RNA (siRNA). siRNA and RNA together form the RNA Induced Splicing Complex (RISC). RISC cleaves nematode mRNA. As a result, the nematode dies in the transgenic host.