Since life began, genes have crossed the boundaries of related and unrelated species in nature. Biotechnology applications by humans date back to 1800 B.C., when people began using yeast to leaven bread and ferment wine. By the 1860s, people started breeding plants through deliberate cross-pollination. They moved and selected genes to enhance the beneficial qualities of plants through crossbreeding without knowing the traits for which the genes coded. Most foods, including rice, oats, potatoes, …