Bacillus thuringiensis (Bt) is a bacteria found in soil that is used in both biological pesticides and in the process of developing insect resistant crop varieties. True False
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Bacillus thuringiensis (Bt) bacterium produces a toxin that kills many insect species. The gene for the toxin was taken from this bacterium and spliced into corn plants. The resulting corn crop, called Bt-corn, would have built-in insecticide and would not suffer insect damage. For the past decade, debate has raged over whether this genetically-engineered corn harms harmless insects. A Cornell University team ignited this debate with the following experiment: They dusted leaves with pollen from Bt-corn and fed the dusted leaves to the caterpillars of monarch butterflies in the laboratory. About half of the caterpillars died, compared to another group fed non-dusted leaves where only two percent of the caterpillars died.
Adi S.
Bacillus thuringiensis produces a natural insecticide fatal to insects. When the bacteria enter the gut of the insect, it paralyzes the gut causing a fatal illness. The insecticide is harmless to humans. B. thuringiensis has a gene that codes for the pesticide. Describe how its pesticide gene can be inserted into corn plants using biotechnology.
Yanni D.
The Bt toxin gene from Bacillus thuringiensis _______. Has been inserted into the corn genome to defend against insect pests. Causes the bacteria to induce gastrointestinal distress in humans. Was acquired by horizontal gene transfer from Bartonella quinquefasciata. Is used to produce a common antibiotic. Is produced by antibiotic-resistant B. thuringiensis.
Madhur L.
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