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Welcome back!. Please get out your objectives #14-18 and your outline of GMO reading in textbook for TWO stamps. The way we eat has changed more in the past 50 years than in the last 10,000. The Green Revolution(s). Green Revolution #1 (1950-1970) - PowerPoint PPT PresentationTRANSCRIPT
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Welcome back!
Please get out your objectives #14-18 and your outline of GMO reading in textbook for TWO stamps.
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The way we eat has changed more in the past 50 years than in the last 10,000
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The Green Revolution(s)
Green Revolution #1 (1950-1970)Increased fertilizer, fossil fuel, and water Increased yield 2-5 times WITHOUT
using more landGreen Revolution #2 (1967-now) –
introduction of genetically engineered crops
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Selective Breeding/hybridization
Pollen transferred Closely related
species many generations Gradual
improvements
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Flavor, shape, color, resistance to disease, resistance to frost
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Glo fish
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GMOs
Genetically Modified OrganismsTransgenic organisms – insertion of
particular gene into an unrelated organism to take advantage of a helpful trait
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Golden rice – b-carotene added
B-carotene (Vitamin A) deficiencies = blindness and death
(still in the testing stages)
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Aquabounty salmon
Gene from Chinook Pacific salmon for growth added to Atlantic salmon
Added DNA for protein which is like antifreeze to keep growth hormone working
Reaches maturity in 18 months instead of 3 yrs
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Monsanto's Roundup Ready soybeans resistant to herbicide
Bt corn is modified with a bacterial gene in order to secrete a poison that kills pests. That can reduce the need for chemical pesticides.
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GMO Genetically Modified Organisms
Soybeans (93%) , corn (86%), alfalfa, sugar beets modified to be resistant to glyphosate
Sweet peppers, squash modified to be resistant to viruses
Cotton (93%) – pest resistance
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GMO
Pros Increased yields Desired traits not limited to
related species No documented negative
effects of eating GMO foods “terminator” genes increase
profits of agribusiness Technologies are not
inherently good/bad
Cons Escaping pollen may alter wild
species Unknown future health effects New allergens could be
introduced Lack of labeling doesn’t allow for
consumer choice “terminator” genes increases
dependence of farmers on companies; ownership of technology presents legal and moral issues
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Our question:
Should GMO foods be labeled?
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Should GMO foods be labled?
Those in favor, including organic food companies and food activists, argue that …residents have a right to know what's in their food.
Organic farmers, advocacy groups
Those opposed, including various food and biotechnology giants, say the law could lead to higher prices at the grocery store and frivolous lawsuits.
Monsanto, Dupont Pioneer, Coca-Cola, and Kellogg
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GMO video clip
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In your team:
Determine your key talking points – what arguments will win the judges in your favor?
Use your internet access to find articles with data to support your main talking points.
Each person: Bring in copy of an article supporting your position with your data highlighted for easy use.
Prepare defensive arguments against what you expect the other team to present.
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Our question:
Should GMO foods be labeled?
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Where do we draw the line?