Q. Which one of the following is a correct statement?
A) ‘Bt’ in ‘Bt cotton’ indicates that it is a genetically modified organism produced through biotechnology
B) Somatic hybridization involves fusion of two complete plant cells carrying desired genes
C) The anticoagulant hirudin is being produced from transgenic Brassica napus seeds
D) ‘Flavr savr’ variety of tomato has enhanced the production of ethylene, which improves its taste
Explanation
‘Bt’ in ‘Bt’ cotton stands for Bacillus thuringiensis, a soil bacterium from which Bt gene (encoding Bt toxin) is obtained. Somatic hybridization involves the fusion of protoplast (i.e, cell minus cell wall) of two cells. Flavr savr is a transgenic tomato with hard skin and improved flavor and recombinant hirudin is obtained from the seeds of transgenic Brassica napas at commercial scale.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.