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GMOs

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lacy
3 diapositives · 1.5K Views · Jul 20, 2014

GMOs. Advantages If properly regulated Remove/prevent disease in some foods Food can be designed to last longer on the shelf; less waste Convenience Improve the nutritional value of some foods. Disadvantages Doesn’t actually increase yields (over time, destroys fields)

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GMOs
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  1. GMOs Advantages • If properly regulated • Remove/prevent disease in some foods • Food can be designed to last longer on the shelf; less waste • Convenience • Improve the nutritional value of some foods Disadvantages • Doesn’t actually increase yields (over time, destroys fields) • Encourage the use of herbicides and pesticides (round-up ready seeds) • Contracts between farmers and Monsanto don’t allow crop circulation or to keep seeds; seeds are engineered to not produce more seeds • Bad effects on the body (carcinogens=cancer-causing agent, birth defects) • Engineered genes can be passed to other organisms (superweeds) • Organic farms near farms that use GMOs - genes transferred to their crops

  2. A species of malaria-carrying mosquito lives in a forest in which two species of monkeys, A and B, coexist. Species A is resistant to malaria, but species B is not. The malaria-carrying mosquito is the chief food for a particular kind of bird in the forest. If all these birds were suddenly eliminated by hunters, which of the following would be an immediately observable consequence? (HINT: Draw out a diagram and Consider how the elimination of the mosquito-eating bird would affect the mosquito population.) • Increased mortality (death rate) in monkey species A • Increased mortality in monkey species B • Increased mortality in the malaria-carrying mosquitoes • Emergence of malaria-resistant strains in monkey species B • Emergence of malaria-sensitive strains in monkey species A • Solution on next slide

  3. A species of malaria-carrying mosquito lives in a forest in which two species of monkeys, A and B, coexist. Species A is resistant to malaria, but species B is not. The malaria-carrying mosquito is the chief food for a particular kind of bird in the forest. If all these birds were suddenly eliminated by hunters, which of the following would be an immediately observable consequence? (HINT: Draw out a diagram and Consider how the elimination of the mosquito-eating bird would affect the mosquito population.) • Increased mortality (death rate) in monkey species A • Increased mortality in monkey species B • Increased mortality in the malaria-carrying mosquitoes • Emergence of malaria-resistant strains in monkey species B • Emergence of malaria-sensitive strains in monkey species A