Test animals fed glyphosate-tolerant soybeans (known as Roundup Ready, these beans are genetically bred to allow the farmer to freely spray the weed killer Roundup without harming the crop) show alterations in liver, pancreatic, intestinal, and testicular tissue compared to animals fed conventional soybeans. The difference is believed to be due to unexpected DNA rearrangement near the gene insertion site, yielding altered proteins in food with potential toxic effects.
