Because of these proper3es and its natural origin it

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Unformatted text preview: nce on pes3cides “wild” strain BT strain Bacillus thuringiensis (Bt) is a soil bacterium that makes toxins that are lethal to many insects. Despite being highly toxic to insects, it has a short residence 3me, and breaks apart into non- toxic cons3tuents. Because of these proper3es and its “natural” origin, it is one of the few insec3cides that is permi\ed for use in cer3fied organic food produc3on. Bt toxin crystals The gene that produces the toxin has now been moved into so-called “Bt strains”, primarily of corn. These plants now produce the toxin in their own tissues, making them resistant to a wide variety of insect attack without the need to apply insecticides. (A) Pes3cide resistance will evolve faster in pests feeding on transgenic Bt crop strains (B) Pes3cide resistance will evolve faster in pests with tradi3onal pes3cide applica3on trhough spraying (C) No way to predict First Documented Case Of Pest Resistance To Biotech CoGon ScienceDaily (Feb. 7, 2008) A pest insect known as bollworm is the first to evolve resistance in the field to plants modified to produce an insec3ci...
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This note was uploaded on 01/30/2014 for the course IB 105 taught by Professor Caceres during the Fall '08 term at University of Illinois, Urbana Champaign.

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