One problem with genetically-modified crops is that their seeds spread far and wide and contaminate fields where other crops are growing. Scientists have found populations of wild plants with genes from genetically modified canola in the United States.
Globally, canola can interbreed with 40 different weed species, and 25% of those weeds can be found in the US. These findings raise questions about the regulation of herbicide resistant weeds and about how these plants might compete with others in the wild. Researcher Meredith Schafer says, "We really don't know what the consequences of the gene escape are. We don
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