The most common genetically engineered crops are corn, soybeans, cotton and canola. Other crops that have been approved for sale include Papayas, Radicchio, Potatoes, Squash and Tomatoes. There is also a genetically engineered hormone, BGH, which is commonly injected into dairy cows in the United States.
The best way to avoid genetically engineered foods is to buy fresh organic food from local farmers. Food is not allowed to be sold as organic if it is genetically engineered.