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प्रश्न
Name an organism that produce cry proteins.
उत्तर
Cry protein is produced by Bacillus thuringiensis (Bt). The genes that control its production are called cry genes, such as - CryIAb, CryIAc, and CryIIAb. This bacterium produces the protein in the form of endotoxin in the protoxin crystalline state.
संबंधित प्रश्न
What is a GMO?
Silencing of a gene could be achieved through tee use ______.
Bt cotton is not ______.
Tobacco plants resistant to a nematode have been developed by the introduction of DNA that produces (in the host cells).
In view of the current food crisis, it is said, that we need another green revolution. Highlight the major limitations of the earlier green revolution.
Discuss the advantages of GMO.
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RNA interference (RNAi) holds great potential as a therapeutic agent for the treatment of human diseases and as biocontrol agents in controlling pests in the field agriculture. An experiment was carried to study the use of 'RNAi' for the potential treatment of disorders of cholesterol metabolism. Some people possess genetic mutations with elevated levels of ApoB gene which predisposes them to coronary artery diseases. Lowering the amount ApoB can reduce the number of lipoproteins and lower the blood cholesterol. Tracy Zimmerman and her colleagues used RNAi in 2006 to reduce the level of ApoB in non human primates Cynomolgus monkeys. One group of monkeys were given RNAi treatment (small interfering RNAs, SiRNAs) (doses 1 mg/kg, SiRNAs), second group of monkeys were given RNAi treatment (doses 2.5 mg/kg, SiRNAs) and third group of monkeys were injected with saline. |
The results of the study are depicted in the graph below:
- How does the treatment with 2.5 mg/kg bring an effect on cholesterol metabolism when compared from 24 hours and 144 hours?
- Write any two natural sources from where dsRNA molecule could be obtained for silencing the specific mRNA.
- How is RNAi used in controlling the infection on the roots of tobacco plants by the nematode Meloidogyne incognitia?
What are cry-proteins?
State any two benefits of Genetically modified crops.
The main objective of the production of pest-resistant GM crops is to ______.
