Genetic engineering is a key component of modern agricultural biotechnology. Although the first genetic engineered (GE) plant was the tomato in 1982, commercial use of genetically engineered major crops occurred in 1996. The first traits incorporated were herbicide tolerance (HT), resistance to insects and resistance to environmental stresses like drought. The majority of acreage planted with GE crops are either HT or insect resistant. Other features being incorporated into GE crops are nutrient enhancements for seed or feed and incorporation of traits beyond the usual food and fiber such as production of pharmaceuticals.
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