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Genetically Modified Foods

Genetically Modified Foods. SciTech 11. What is a Genetically Modified (GM) Food?. Foods that contain an ____________ ______________ Foods that have a ___________ gene sequence Animal products from _____________ ____________ Products produced by GM organisms.

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Genetically Modified Foods

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  1. Genetically Modified Foods SciTech 11

  2. What is a Genetically Modified (GM) Food? • Foods that contain an ____________ ______________ • Foods that have a ___________ gene sequence • Animal products from _____________ ____________ • Products produced by GM organisms

  3. Why are foods genetically modified? • ____________________ offers a ______ and ________ method of altering organisms as compared to traditional methods that are _______ _________________

  4. Common GM Foods • _____________ • _____________ – herbicide resistant (89%) • ________ – pesticide resistant (60%) • ________ – contains more vitamin A • ________ – milk with more protein • ________ – omega-3 fatty acids http://en.wikipedia.org/wiki/Genetically_modified_food

  5. How is genetic modification possible? • The components of _____ are the ______ in all organisms. • Sequences that ____ ______________ can be _________ from one organism to another.

  6. How can DNA be moved from one organism to another? Its quite simple, REALLY!!!

  7. How can DNA be moved from one organism to another? • Find an organism with the _________ _____________ • _________ the ________________ that codes for the desired trait • _________ the gene sequence into the __________ of the plant cell

  8. How can DNA be moved from one organism to another? • Allow the genetically altered cell to _____________________ • Allow the plant to ____________

  9. A _________ can carry DNA. The vector can be a ________________________. ________ and ___________ also can be utilized to transfer genes. How can DNA be moved from one organism to another?

  10. Possible Benefitsof GM Foods • ________________________ • Development of crops that can be grown in ___________________ • ________________________________________________ • Development of _____________ __________ crops • Development of salt-tolerant crops • Development of crops that make more efficient use of nitrogen and other nutrients

  11. Possible Benefits of GM Foods • ___________________________________________________ • Development of pest resistant crops • Reduced herbicide use is ____________ _________________ and reduces costs for farmers

  12. Possible Benefits of GM Foods • ______________________________ • Development of _______ resistant crops • Development of __________ resistant crops • Development of _______ resistant crops • ______________________________ • Development of foods designed to meet specific ____________________

  13. Who makes sure GM foods are safe? • ________________________________________________________ • GM foods in the United States are required to be labeled only if the nutritional value is ____________ or a new allergen is introduced.

  14. Possible Risks of GM Foods • _________ might _____________________ to pesticide-producing GM crops • Herbicide-tolerant crops may ________________ weeds, resulting in “_____________"

  15. Possible Risks of GM Foods • _______________________ • Eg: some GMO corn does not reproduce, so farmers must buy seeds every year • _________ from GMO crops may travel to wild crops, ______________________

  16. Possible Risks for GM Foods • Certain gene products may be _____________, thus causing _________ ____________________ • There may be ___________________ wildlife and beneficial insects Photo courtesy of T. W. Davies, Cal. Acad. of Sciences.

  17. THE END

  18. Homework Assignment • How do you feel about GM foods? Are they beneficial or harmful? • Compare and contrast articles of your choice from the following web sites. After reading articles from both web sites, use your favorite Internet search engine to find more information on the GM food debate. • http://www.ornl.gov/sci/techresources/Human_Genome/elsi/gmfood.shtml • www.greenpeace.org • Write a short report on your views about GM foods.

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