Widely planted
forbid
confused
America Canada Argentina
阿根廷
Most European counreies
China and many other countries

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Situation in the world
对抗生素的抵抗作用

当科学家把一个外来基因加入到植物或细菌中去， 这个基因会与别的基因连接在一起。人们在服用了这 种改良食物后，食物会在人体内将抗药性基因传给致 病的细菌，使人体产生抗药性。
Present Situation and Future Development
GM food in world
多产的
产量
GM crops can be made resistant to pests害虫 ↓ Saves the use of toxic chemicals有毒化肥 ↓ More environment friendly because they require less herbicides and pesticides.
Wewant should beup careful about GMF; I also to call a group of young volunteers to eat this strain ofGMF rice –in who We should recognize a will take a riskway for human’s development. science and treat different GM foods in different ways.

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Shelves stacked with GM foods
But…
Can every common person tell which ones are natural and which are GM products?

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• Agricultural(农业)value
• medicinal value • Ecological(生态) value
• edibleness 食用价值
• Economic(经济)value
grow faster than the GM crops → traditionally grown crops ↙ ↘ more productive a larger yield
杀虫剂
• GMF Offers more nutritional(营养） value and better flavor . Eg. Vitamin A
Economic value
Reduce extra costs, such as buying chemicals and pesticides(农药）.
Distributions
Recently, China issued Certificates for genetically modified rice‘Huahui
number one’
and ‘Bt Shanyou 63’.
我国最近为转基因抗虫水 稻“华恢1号”和“Bt汕 优63”发放了安全证书。
过敏反应问题

对于一种食物过敏的人,有时还会对一种以前他们 不过敏的食物产生过敏，比如：科学家将玉米的某一 段基因加入到核桃、小麦和贝类动物的基因中，蛋白 质也随基因加了进去，那么，以前吃玉米过敏的人就 可能对这些核桃、小麦和贝类食品过敏。
Resistance to antibiotics

When the scientists a foreign gene into the plant or bacteria, this gene and other genes connected together. People after using the improved food, food will be in the human body resistance genes to pathogenic bacteria, make human body resistance.
Potential danger of GMF
Toxicity problem

Some researchers believe that for artificial refining and added genes, be achieved in some people want to achieve the effect of at the same time, also increase and accumulate the original traces of poison in the food.
I’m ready tobe take a risk for science. GMF,can’t denied or I will be one of the people who eat believed withoutmodified experiments. genetically rice .
Genetically
Modified
Food
初三（20）班 邵尧
(GMF)
genetically modified food
GMF
For example, genes from a fish have been placed in strawberries and tomatoes.
a plant, animal, or microorganism that is created by means that overcome natural boundaries. Genetic engineering involves crossing species that could not breed in nature.
毒性问题
一些研究学者认为，对于基因的人工提炼和添加， 可能在达到某些人们想达到的效果的同时，也增加和 积聚了食物中原有的微量毒素。
Allergy problem

For a food allergy sometimes food allergic to a previously they do not produce allergic, such as: the scientists added a gene of corn to the walnut, wheat, and shellfish gene, protein is added with gene, so, before eat corn can people who are allergic to the nuts, wheat, and shellfish food allergies.