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G.M.O Genetically Modified Organisms

Science 9 Prpject and Presentation

Ginny Weasley

on 6 June 2013

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Transcript of G.M.O Genetically Modified Organisms

By Cheyenne Petlikau-Ross and Savannah Horne A Science 9 Project and Presentation G.M.O Gentically Modified Organismns Created By Cheyenne Petlikau_Ross and Savannah Horne A Science 9 Project and Presentaion Countries that grew 99% of the global transgenic crops were: the United States (63%), Argentina (21%), Canada (6%), Brazil (4%), and China (4%), and South Africa (1%). G.M.O. Growth percentage. G.M.O. Benefits & Concerns. The G.M.O. crops can benefit countries because, these crops can produce higher yields. Which could help by feeding more people in developing countries. Improved food quality is another benefit of GM foods. A tomato, for example, can be engineered to stay fresher for longer, thereby extending its shelf life in the supermarket. Another benefit that is believed to occur from GM technology is that crops can be engineered to withstand weather change and extremes. This means that they can provide sufficient yields and quality despite a severe, poor weather season. Another benefit is that GM foods can be engineered to have a high content of a specific nutrient that is lacking in the diet of a local population group. Benefits Concerns An issue in GM foods is the ability of a food to trigger an allergy in humans. Some of the genes used in GM technology might be taken from a food that causes allergies in some people. Inserting that gene into another organism could cause the host organism to express that allergen as a trait. because of this, a new allergen could be produced when genes are mixed across different species. Another potential downside to GM technology is that other organisms in the ecosystem could be harmed, which would lead to a lower level of biodiversity. By removing one pest that harms the crop, you could be removing a food source for an animal. Also, GM crops could prove toxic to an organism in the environment, leading to reduced numbers or extinction of that organism. GM foods are modified using bacteria and viruses, there is a fear that we will see the emergence of new diseases. The threat to human health is a worrisome aspect of GM technology and one that has received a great deal of debate. There are four main advantages of genetically engineering plants instead of the traditional methods. First, the source of the DNA is not limited to related wild plants. It may come from other plant species, animal, microorganisms, or even lab synthesized genes. Next, transfer of new genes is more direct and does not require many generations of breeding to recover the new cultivar. Also, while traditional methods of gene transfer may result in the transfer of closely linked or unwanted genes, genetic methods allow for a more discrete transfer of a single valuable gene. Lastly, new gene constructs can be made, using molecular biology techniques, which could not be found in wild plants used for traditional breeding. Advantages of genetic engineering versus traditional plant breeding

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