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प्रश्न
One of the major contributions of biotechnology is to develop pest-resistant varieties of cotton plants. Explain how it has been made possible.
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उत्तर
One of the major contributions of biotechnology is the development of insect resistant variety of cotton called Bt cotton. This plant contains the gene (cry gene) from the bacteria Bacillus thuringiensis.
Genes encoded by Cry IAc and Cry II Ab control cotton bollworms and those encoded by Cry IAb control corn borer. The gene from the bacteria is transferred to the plant cell with the help of Agrobacterium Ti-plasmid. The product of this gene is Bt toxin. This toxin is a type of protein that is toxic to a variety of insects including bollworm complex.
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संबंधित प्रश्न
Distinguish between RNA and DNA.
Explain what are the desirable characteristics of an ideal cloning vector used in rDNA technology.
Define biotechnology? Which are the basic principles and process of biotechnology?
What is gene cloning? Explain different tools used for it.
The time taken to complete one cycle of PCR is around ______.
Which one is a true statement regarding DNA polymerase used in PCR?
Restriction enzymes were discovered by ______.
How does EcoRI differ from an exonuclease?
Name the enzymes that are called molecular scissors.
How does the concept of cloning relate to the multiplication of genetic material in biotechnology?
