The transformation of genes from Bacillus thuringiensis (Bt) that code for the production of insecticidal toxins into crops reduces the pollution associated with the application and run off of chemical pesticides, because the toxins are produced continuously within these plants. However, there is increasing concern that these crops may pose risks to natural and agricultural ecosystems. So far, most of the research has focused on upland crops, such as Bt corn, and Bt potato. No studies have been carri...