Plants raised from cells genetically engineered to carry genes not native to the species are transgenic plants. There has been exciting progress in developing improved novel traits in many crop plants. The first transgenic tobacco plant was developed in 1983 followed by cotton, soybean, mustard, maize, and so on. There is a large-scale cultivation of insect-resistant transgenic crops, few of which are boll worm–resistant cotton, corn borer–resistant maize, and herbicide-resistant soybean. A large number of transgenic plants are of economic value due to their enhanced stress tolerance, resistance to bacterial, viral, and fungal pathogens, improved nutritional quality, therapeutic protein content, ability to generate antigenic proteins for use as vaccines, ability to form biodegradable plastics, or accumulate larger quantity of novel secondary metabolites. Multiple benefits of transgenic crops include flexible crop management, beneficial crop variants (e.g., β-carotene-enriched rice grains) and crops of higher produce.