re resistant to environmental stress, viruses, and insects. Such modified plants will be resistant to the same factors as the incorporated gene.
             Crop plants could be genetically engineered to manufacture functional insecticides so that they are immanently tolerant to insects. No hazardous and costly pesticides are needed for such plants resulting in very low crop maintenance costs. Moreover, biological insecticides are highly specific for a range of insects and considered to be harmless to humans and other higher animals (Glick and Pasternak 341).
             Plant viruses very often attack crops and cause significant damage and loss of crops. Recombinant DNA technology offers a few ways to obtain natural virus resistance: vir
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