Genetic engineering vs. natural breeding: What’s the difference?

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I’m not an expert: When I told a friend I was writing about GMOs he asked, “So are you for them, or against?” My answer: “I’m trying to figure that out.”

The next step in trying to figure that out is to really understand how genetic engineering works. Is this process simply a minor extension of plant-breeding techniques? Or is there a way in which genetic engineering represents a fundamental discontinuity with the age-old practice of farmers selecting seeds?

Source: Grist