discursive+essay++++yee

Genetically modified food should be banned In 21st century, genetically modified food which occupying a majority of market of fruit, vegetable such as pineapple, soybean, tomato and potato, which may provide greater resistance to pests and viruses or higher nutritional value and longer shelf life. This essay will focus on the arguments for and against the issue of genetically modified food. First of all, the technique not only can produce better quality food crops but the crops can withstand the weather extremes, the scientists can adapt to the climate by changing the construction of genes or using the genes from other crops to replace the genes which can’t stand the droughts or floods. Secondly, genetically modified food provides higher nutritional yields in crops and foods with a greater shelf life, like tomatoes that taste better and last longer. Due to these advantages of the genetically modified food, children and elder people can absorb more nutrition and vitamins from the same amount of fruits or vegetables. Additionally, the fruit can be preserved longer time without rotting. Finally, some biologists support the genetically modified food is potentially better for the environment. By using the genetically engineered crops that are resistant to attack by pests or diseases, farmers and primary producers do not have to apply amounts of pesticides and chemicals to surrounding environment. Despite these benefits, the genetically modified food has some significant disadvantages. On one hand,  new allergens could be inadvertently created that allergens could be transferred from traditional foods into GM foods. For instance, during laboratory testing, a gene from the Brazil nut was introduced into soybeans. It was found that people with allergies to Brazil nuts could also be allergic to soybeans that had been genetically modified in this way and so the project was ceased. No allergic effects have been found with currently approved GM foods .On the other hand, other risks include the potential for cross-breeding between GM crops and surrounding vegetation, including weeds. This could result in weeds that are resistant to herbicides and would thus require a greater use of herbicides, which could lead to soil and water contamination. The environmental safety aspects of GM crops vary considerably according to local conditions. In conclusion, it’s clear that human have got benefits from the result of genetically modified experiments. And I agree that if we can pay more attention on this issue, some harm will be disappeared. So I think we can enjoy the benefits from the technology of genetically modified carefully.