Genetically Modified Foods Sci Tech 11 What

Genetically Modified Foods Sci. Tech 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

Why are foods genetically modified? t__________ offers a ______ and ____ method of altering organisms as compared to traditional methods that are ____________

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

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

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

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

How can DNA be moved from one organism to another? ►Allow the genetically altered cell to ___________ ►Allow the plant to ______

How can DNA be moved from one organism to another? Ù A _____ can carry DNA. The vector can be a _________ and ______ also can be utilized to transfer genes.

Possible Benefits of 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

Possible Benefits of GM Foods ÷ _________________ ►Development of pest resistant crops ►Reduced herbicide use is _________________ and reduces costs for farmers

Possible Benefits of GM Foods Ù_______________ ðDevelopment of _______ resistant crops Ù_______________ ðDevelopment of foods designed to meet specific __________

Who makes sure GM foods are safe? î___________________ îGM foods in the United States are required to be labeled only if the nutritional value is ______ or a new allergen is introduced.

Possible Risks of GM Foods t _____ might ___________ to pesticide-producing GM crops t Herbicide-tolerant crops may ________ weeds, resulting in “_______"

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, ___________

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.

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Homework Assignment ðHow do you feel about GM foods? Are they beneficial or harmful? w 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 w Write a short report on your views about GM foods.