GMO includes transgenesis and cisgenesis[24]. In the case of transgenesis, the transferred gene
usually derived from an alien species that is neither the recipient species nor a close, sexually compatible
relative. In other words, transgenesis can extend the gene pool of the recipient species. Such a novel
gene might provide the target plant with a new trait that neither occurs in the recipient species in nature
nor can be introduced through traditional breeding. This novel trait might affect the fitness of the
recipient species in various ways. The change in fitness can then spread through gene flow between a
GM crop and its wild relatives, potentially creating gene shifts in natural vegetation and lead to some
negative results.