Soybeans in field.

Image Credit: Fuse/Fuse/Getty Images A GMO, or genetically modified organism, can be defined as a plant or animal that is created or modified through genetic engineering. This technology allows DNA from one species to be transferred into another species. Several major U.S. crops are largely composed of genetically engineered versions of their traditional counterparts. Grains, for the most part. are not genetically engineered.

  Advertisement
 
Grains Are Not High-Risk
   
Alfalfa sprouts.

Image Credit: imarly/iStock/Getty Images The Non-GMO Project lists eight crops or foods that are considered “high-risk” due to their widespread use. These crops include alfalfa, soy, papaya, cotton, corn, canola, sugar beets and zucchini. Corn, cotton, canola, soy and sugar beets are particularly prevalent, with around 90 percent or higher crop domination. There are no grain crops that are considered high-risk for being genetically modified.

  Advertisement
 
  Video of the Day
  
Monitored Grains
   
Wheat field.

Image Credit: jeka1984/iStock/Getty Images The Non-GMO Project also lists a number of monitored crops that have the potential to become contaminated through cross-pollination of other genetically engineered crops. In some instances genetically engineered versions of these crops have been developed but are not currently used in production because they have not received U.S. Department of Agriculture approval. Among these crops are wheat and rice.

  Advertisement
 
GM Wheat
   
Wheat is often GM.

Image Credit: Paul Grecaud/iStock/Getty Images The bio-tech and agricultural company Monsanto has developed genetically modified wheat, but the USDA has yet to approve it. There have been reports of contamination by genetically modified wheat into traditional wheat fields. These incidents are isolated, however, and do not present a high risk to average consumers who wish to avoid genetically modified wheat.

  Advertisement
 
Golden Rice
   
Golden rice.

Image Credit: tropper2000/iStock/Getty Images A variety of genetically modified rice known as Golden Rice has been in development since the 1990s. This rice was engineered to produce pro-vitamin A, as a way to correct vitamin A deficiencies in developing countries. Golden Rice may be able to contaminate traditional rice through cross-pollination. This rice, however, is not used in the United States.

  Advertisement
 
No-Risk Grains
   
Non GM grains.

Image Credit: Han v. Vonno/iStock/Getty Images There are a number of grains for which no GM varieties exist, and there is no risk of contamination for these crops. If you want to be 100 percent certain you’re consuming GMO-free grains, your options include amaranth, barley, buckwheat, bulgur, einkorn, farro, grano, kamut, millet, oats, quinoa, rye, sorghum, spelt, teff and triticale.

  Advertisement
 
  Advertisement
  
  references
  
      Non GMO Project: What Is GMO?
    
      Huff Post Green: Unapproved GMO Wheat Seeds Being Investigated By U.S. Search Team
    
      GreenPeace: Golden Rice
    
      Whole Grains Council: Whole Grains A to Z
       




  references
  
      Non GMO Project: What Is GMO?
    
      Huff Post Green: Unapproved GMO Wheat Seeds Being Investigated By U.S. Search Team
    
      GreenPeace: Golden Rice
    
      Whole Grains Council: Whole Grains A to Z
    




Soybeans in field.

Image Credit: Fuse/Fuse/Getty Images

Image Credit: Fuse/Fuse/Getty Images

Alfalfa sprouts.

Image Credit: imarly/iStock/Getty Images

Image Credit: imarly/iStock/Getty Images

Wheat field.

Image Credit: jeka1984/iStock/Getty Images

Image Credit: jeka1984/iStock/Getty Images

Wheat is often GM.

Image Credit: Paul Grecaud/iStock/Getty Images

Image Credit: Paul Grecaud/iStock/Getty Images

Golden rice.

Image Credit: tropper2000/iStock/Getty Images

Image Credit: tropper2000/iStock/Getty Images

Non GM grains.

Image Credit: Han v. Vonno/iStock/Getty Images

Image Credit: Han v. Vonno/iStock/Getty Images

      Non GMO Project: What Is GMO?
    
      Huff Post Green: Unapproved GMO Wheat Seeds Being Investigated By U.S. Search Team
    
      GreenPeace: Golden Rice
    
      Whole Grains Council: Whole Grains A to Z