http://articles.mercola.com/sites/articles/archive/2005/08/11/are-gm-crops-spurring-the-creation-of-super-weeds.aspxEvidence has emerged that transgenic oilseed rape, used to make canola oil , is interbreeding with related wild species, raising fears that herbicide-tolerance could spread among weeds. Genetically Engineered Plants Crossbreed With Weeds In a three-yearenCommunityServer 2008.5 SP1 (Build: 31106.3070)