A) somaclonal variation
B) micropropagation
C) somatic hybridisation
D) Transgenic technology
Correct Answer: D
Solution :
Bt cotton is a genetically modified variety of cotton producing an insecticide. It was produced by Monsanto by inserting cry gene coding for Bt toxin into cotton plant genome by using transgenic technology causing cotton to produce this natural insecticide in its tissues. This gene was obtained from Bacillus thuringiensis, while other techniques mentioned in the options such as somaclonal variation, somatic hybridisation and micropropagation are the methods that rely as tissue culture techniques of producing plants by using different plant parts. They does not involve the gene level transfer.
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