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P5 e-Learning science genetically modified food
 

P5 e-Learning science genetically modified food

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    P5 e-Learning science genetically modified food P5 e-Learning science genetically modified food Presentation Transcript

    • Genetically Modified/ Engineered Food.
    • What are GM crops?
        • Plants which have been genetically altered to express a desirable trait (Perry 2003)
          • Herbicide resistance
          • Virus resistance
          • Insecticides
          • Environmental Tolerance
          • Increased nutritional value
    • Natural genetic evolution of the maize crop took 10,000 years. From Teosinte (top) to corn or maize (bottom)
    • Genetic modification can shorten this process to a few years.
    • Plant Breeding and Crop Yield Tons per hectare
    • Peas (on the left) that make a genetically engineered bean protein are insect-resistant and do not need to be sprayed with pesticides.
    • What are people’s concerns
      • Is this food safe?
      • Should food be labeled?
      • Are there adverse environmental effects?
    • What about their nutritional value and safety?
    •  
    • References
      • http://tiki.oneworld.net/food
      • http://www.brighthub.com/science/genetics/articles/23358.aspx