Genetically modified foods

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Post on 01-Jun-2015




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<ul><li> 1. Genetically Modified Foods Flavr Savr Tomatoes Anna Niemeyer</li></ul> <p> 2. What are Genetically Modified foods? Crop plants that have been modified inlaboratories to enhance traits such asresistance to pesticides or improvednutritional content. Bigger and better crops Improved taste and look 3. Before the Flavr Savr Picked before ripe and gassed with ethylene togive red color keeps them from becomingbruised and spoiled. Tomatoes lose their taste and taste more likecardboard. 4. What is the Flavr Savr? A tomato that will not soften while ripeningon the vine. A tomato implanted with a gene from E. coli The transgenic tomato would allow tomatoesto be shipped safely, keep their color, andhave their natural flavors. Increased shelf life 5. Making the Flavr Savr Gene from E. coli inserted into plasmid, Kan(r) Plasmid inserted into tomato in a growthmedium containing an antibiotic The antibiotic kills cells that do not have theplasmid in them Purpose of Bacterial Gene- identify cells thatwere not genetically transformed 6. The Gene Flavr Savr Gene- a strand of RNA that isreverse of the RNA that occurs in the plant Original RNA- Produces enzymePolygalacturonase Flavr Savr RNA- binds to Polygalacturonase sothe enzyme cant break down pectin (causestomato to become soft). The two strandscancel each other out 7. Flavr Savr Basically, the gene in the tomato stops thetomato from softening during ripening so thatit is easier to ship but keeps its natural flavorstoo. The tomato also has a much longer shelflife and keeps from spoiling quickly. 8. Pros and ConsProsCons Longer shelf life Safety- health risks, some Easier to ship environmental risks Enhanced taste Possible monopolies for Resistance tobusinessesdisease, pests, herbicides Ethical concerns Green Only rich countries can Food security for growingafford itpopulation 9. Ethics Tampering with nature Violation of organisms natural intrinsic valuesCan cause issues in plants 10. Current Status Used in crops Used in animals 69 million hectares modified Adding more genetically modified foods around the world 11. The Future Adding drugs into foods Crops that produce vaccines vaccine that will treat hepatitis B Plants that make plastics Animals maturing quicker Improving shelf life 12. ExamplesAgainst GM For GM</p>