OBJECTIVE LIFE SCIENCE
BIOTECHNOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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a mutation in an animal cell
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an animal cell with no mutation
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bacteria with antibiotic resistance
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a plant with bacterial DNA
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Detailed explanation-1: -Agrobacterium tumifaciens is a soil bacterium that, as part of its natural pathogenesis, injects its own tumor-inducing (Ti) plasmid into cells of a host plant.
Detailed explanation-2: -An example of transgenic bacteria is E. coli. In the plasmid of E. coli, the two DNA sequences corresponding to A and B chain of human insulin are inserted, so as to produce the respective human insulin chains.
Detailed explanation-3: -Organisms that have altered genomes are known as transgenic. Most transgenic organisms are generated in the laboratory for research purposes. For example, “knock-out” mice are transgenic mice that have a particular gene of interest disabled.
Detailed explanation-4: -Bacillus thuringiensis crops: A few examples of transgenic plants are Bt cotton, Bt corn, Bt potato, and Bt tobacco. These plants are genetically engineered to possess endotoxin, which prevents the action of various pests that belong to the order: Lepidoptera, Coleoptera, Hymenoptera, Diptera, and Nematoda.