题目内容

Virus resistance is achieved through the introduction of a gene from certain viruses which cause disease in plants. Virus resistance makes plants less _____________ to diseases caused by such viruses, resulting in higher crop yields.

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Biotech maize and ___________ are most common GM food in the US.

Genetic technology has claimed that it will increase plant yields, animal produce and the nutritional value of food, whilst decreasing the amount of land needed and minimizing damage to the ______________.

Nematodes are currently treated with toxic chemicals such as __________, which do not enter the food chain, but are expensive to apply and can make soil sterile, killing other living organisms within it.

GMO proponents note that because of the safety testing requirements, the risk of introducing a plant variety with a new _________ or toxin is much smaller than from traditional breeding processes, which do not require allergen tests.