Which of the following is a correct statement ?

Options

A. "Bt" in Bt-cotton indicates that it is genetically modified organism produced through Biotechnology
B. Somatic hybridization involves fusion of two complete plant cells carring desired genes
C. The anticoagulant hirudin is being produced from transgenic Brassica napus seeds
D. "Flavr Savr" variety of tomato has enriched the production of ethylene which improves its taste

Answer

To determine which statement is correct, let's analyze each option step by step:

1. **Option 1: Bt cotton indicates that it is a genetically modified organism produced through biotechnology.**
- Bt cotton is indeed a genetically modified organism (GMO) that has been engineered to express a bacterial gene from *Bacillus thuringiensis* (Bt), which provides resistance to certain pests. This statement is correct.

2. **Option 2: Somatic hybridization involves fusion of two complete plant cells.**
- Somatic hybridization typically involves the fusion of protoplasts (cells without cell walls) rather than complete plant cells. This statement is misleading because it does not accurately describe the process.

3. **Option 3: The anticoagulated herudin is being produced from transgenic Bn seed.**
- Herudin is a natural anticoagulant produced by leeches, and while transgenic plants can be engineered to produce various proteins, the statement lacks specificity and clarity regarding the source and the exact process. This statement is not clearly correct.

4. **Option 4: Flavor saver variety of tomato has been enriched in production of ethylene which improves the taste.**
- The Flavor Saver tomato was genetically engineered to have reduced levels of a gene that encodes an enzyme involved in the breakdown of pectin, which helps maintain firmness and improve shelf life. However, the statement about ethylene production is misleading as it suggests that ethylene is increased when, in fact, the modification was aimed at delaying ripening. This statement is also misleading.

After analyzing all options, the correct statement is:

**Correct Statement: Option 1 - Bt cotton indicates that it is a genetically modified organism produced through biotechnology.**