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Genetically Modified Crops: Impact and Controversy

Explore the history, production, and potential impacts of genetically modified crops, including the benefits, risks, and ethical concerns associated with altering an organism's DNA. Understand the global significance and ongoing debates surrounding this topic.

jenniferrwhite
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Genetically Modified Crops: Impact and Controversy

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  1. 5/2 Exam 3in ART 1.102 Review 4/30 in class and 5/1 at 5pm in GRG 102 Bonus 3 is due now. 4/30 homework 4(12 pts max)

  2. Agricultural Hunter- Gatherer Industrial

  3. from Teosinte Maize By artificial selection that began ~10,000 years ago.

  4. Different foods from one species of plant. Created by artificial selection.

  5. Wild member of Brassica oleracea: small side buds Artificial selection 1. Select individuals that have the largest side buds and breed them. 2. Of the offspring, select individuals that have the largest side buds and breed them. Number of Individuals 3. Of the offspring, select individuals that have the largest side buds and breed them. 4. After several generations, bud size increases dramatically. 0 1 2 3 Size of buds (cm) Brussels sprouts: extremely large side buds

  6. Human resource production and use

  7. Human resource production and use

  8. Land use in USA, 1997

  9. Agricultural Hunter- Gatherer Industrial

  10. nucleus from DNA: the Information DNA RNA cytoplasm to proteins: the Actors protein

  11. Combinations of 3 nucleotides code for each 1 amino acid in a protein.

  12. Genetic Engineering: Direct manipulation of DNA

  13. Genetic Engineering: Direct manipulation of DNA Genetic Engineering of plants using Agrobacterium is very common.

  14. Agrobacterium infect plants, inserting their DNA into the plants genome.

  15. Transforming plants

  16. Global Area planted with GM Crops size of Texas, 172 Millions of Acres

  17. Common Genetically Modified Crops % of Total US Acres

  18. Why Change a Plant’s DNA? • Can change plant so that it has new or different characteristics • Produce needed protein • Insect resistance (Bt toxin) • Herbicide resistance (Round-up) • Drought or other stress resistance

  19. Types of Genetically Modified Crops Herbicide Tolerance; Insect Resistance; Viral Resistance

  20. Is Genetically Modifying Plants a Good Idea? size of Texas, 172 Millions of Acres

  21. Is Changing an Organism’s DNA a Good or Bad Idea? • Genes flow within species and between species. • Are GM foods safe for the environment? • Are herbicide or insect resistant plants safe to eat? • Are GM foods profitable for: • Consumers, Farmers, and Companies?

  22. Pollution in Gulf of Mexico from run-off in the Mississippi river AAL 25.17

  23. Pollen is easily transferred from plant to plant, and to related species.

  24. Genetic information moves. GM crops found in Oaxaca and other MX states GM crops illegal

  25. Genetic information moves, and is self-replicating. GM crops found in Oaxaca and other MX states GM crops illegal

  26. Is Changing an Organism’s DNA a Good or Bad Idea? • Genes flow within species and between species. • Are GM foods safe for the environment? • Are herbicide or insect resistant plants safe to eat? • Are GM foods profitable for: • Consumers, Farmers, and Companies?

  27. N. Am. Forest An inter-connected ecosystem

  28. Danger of GM crops to other organisms

  29. Danger of GM crops to other organisms

  30. Danger of GM crops to other organisms

  31. Danger of GM crops to other organisms

  32. Danger of GM crops to other organisms

  33. Many Questions, but Few Answers? • Genes flow within species and between species. • Are GM foods safe for the environment? • Are herbicide or insect resistant plants safe to eat? • Are GM foods profitable for: • Consumers, Farmers, and Companies?

  34. Common Genetically Modified Crops % of Total US Acres

  35. Many Questions, but Few Answers? • Genes flow within species and between species. • Are GM foods safe for the environment? • Are herbicide or insect resistant plants safe to eat? • Are GM foods profitable for: • Consumers, Farmers, and Companies?

  36. Where does the information about genetically modified foods come from?

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