NEET2005ZoologyBiotechnology and Its ApplicationsActual
Which one of the following is a correct statement?
Options
- A"Bt" in "Bt-cotton" indicates that it is a genetically modified organism produced through biotechnology.
- BSomatic hybridization involves fusion of two complete plant cells carrying desired genes.
- CThe 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.
Correct answer
A. "Bt" in "Bt-cotton" indicates that it is a genetically modified organism produced through biotechnology.
Step-by-step solution
Bt in "Bt Cotton" stands for Bacillus thuringiensis. This is naturally occurring soil bacterium. Somatic hybridization involves fusion of protoplast of two cells. "Flavr savr" is genetically engineered tomatoes which express delayed softening by insertion of an additional copy of PG endociding gene. PG is poly galacturonase enzyme which is responsible for the breakdown of cell wall pectin. Transgenic Brassica napus seeds are being used to produce the anticoagulant hirudin.