Introduction.Genetic engineering or genetic modification of corn refers to the use of molecular or other similar biotechnological techniques to add small amounts of chromosomal material to the atomic structure and composition of corn, to protect it from pest infestations, damage from herbicides or to increase its quality 4. In general, genetically modified corn is hardwired to resist herbicides and produce its own insecticide . The trait in corn that tolerates herbicides is produced using a selection of tissue cultures and a chemical called mutagen ethyl methanesulfonate 1. The trait in genetically modified corn that produces an insecticide contains a certain protein that is toxic for certain insect pests called Bt toxin, hence why Genetically modified corn is also called Bt corn. 3.How does it work? Transforming normal corn into Bt corn involves extracting the required gene from the organism donor, Bacillus thuringiensis1, a bacteria naturally present in soils. Genetic material is extracted from this bacteria to make a certain form of protein (Bt delta endotoxin) that has the ability to kill harmful larvae of 5 Lepidoptera species such as the notorious corn borer and the southwestern corn borer . However, this gene does not implant itself. A combination of the gene and other genetic material, such as a promoter sequence that partly determines how the new trait will appear or articulate in corn, is also implanted. 5 Such traits may include the articulation of the protein in particular parts of corn or at specific times. Examples of such promoters include herbicide and antibiotic tolerance promoters which are frequently used to identify which paper heart...... digestive system. Conclusion Many debates are still ongoing within environmental, food and drug control agencies. institutions and other scientific research organizations and specialists on the viability of the use of genetically modified foods in general. The general opinion is that safety standards must be considered before carrying out genetic modification. This is done by comparing the risks of such a modification to the opportunity cost of maintaining the unmodified version. Several measures should be taken to ensure that certain effects of genetically modified foods are under control. For example, the creation of super weeds through cross-pollination between Bt corn and crop weeds can be avoided by using control regions where farmers plant unmodified corn in nearby fields. Bt corn or planting sterile male Bt corn to prevent the spread of pollen to crop weeds.