Lastly, some argue that if farmers are permitted to sow GM varieties, they become dependent on large seed producers such as Monsanto, which have patent protection – and thus a monopoly – on the seed. But private corporations undertake only about half of all agricultural research, whether or not it involves genetic engineering.
论点之四：转基因作物的花粉会“污染”有机生长作物。这个问题只有在开放授粉作物身上才会发生。此外，将转基因排除在“有机生长”的定义之外也难以令人信服，毕竟基因本身也是有机的。