How are genetically engineered foods different from non-engineered foods?

Genetically engineered foods are created by artificially crossing one species with another in order to get a desired trait, such as resistance to a pesticide or the creation of an insecticide within the plant itself. Non-engineered foods are not crossed with any species other than varieties within the species itself. For example, crossing one variety of corn with another through hybridization in non-GMO varieties versus artificially inserting a bacteria gene into corn in the GMO varieties.