Q.

Which of the following is a correct statement?

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“Bt” in Bt-cotton indicates that it is genetically modified organism produced through biotechnology.

Somatic hybridisation involves fusion of two complete plant cells carrying desired genes.

The anticoagulant hirudin is being produced from transgenic Brassica napus seeds.

“Flavr Savr” variety of tomato has enriched the production of ethylene which improves its taste.

answer is C.

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Detailed Solution

Hirudin extracted from leeches was the first anticoagulant used in humans in 1905. Its gene was chemically synthesised and was transferred into Brassica napus where hirudin accumulates in seeds. The hirudin is extracted and purified and used as medicine. Today hirudins are produced as recombinant proteins based on the leech anticoagulant protein sequence. It prevents coagulation by acting as an antithrombin.

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