Which of the following is a correct statement ?

Options

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

Answer

To determine which statement is correct, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Option A: Bt in Bt cotton indicates that it is a genetically modified organism produced through biotechnology.**
- **Analysis:** The term "Bt" stands for Bacillus thuringiensis, which is a bacterium that produces a protein toxic to certain pests. Bt cotton is genetically modified to express this protein, making it resistant to specific insects. Therefore, this statement is misleading because while Bt cotton is a genetically modified organism, the statement does not clarify that Bt refers to the bacterium itself.
- **Conclusion:** This option is incorrect.

2. **Option B: Somatic hybridization involves fusion of two complete plant cells carrying desired genes.**
- **Analysis:** Somatic hybridization refers to the fusion of protoplasts (the living part of a plant cell without its cell wall) from two different plant species or varieties. The fusion occurs at the nuclear level after the protoplasts are isolated, not with complete plant cells. Thus, this statement is also misleading.
- **Conclusion:** This option is incorrect.

3. **Option C: The anticoagulant herodin is being produced from Transgenic Brassica napus seeds.**
- **Analysis:** Herodin is indeed an anticoagulant that has been produced using transgenic plants, specifically Brassica napus (canola). This statement is accurate as it correctly identifies the source of herodin production.
- **Conclusion:** This option is correct.

4. **Option D: Flavor Saver Tomato variety of tomato has enhanced the production of ethylene which improves its taste.**
- **Analysis:** The Flavor Saver Tomato was genetically engineered to reduce the production of ethylene, which slows down the ripening process and helps maintain the tomato's firmness and flavor during storage. Therefore, this statement is incorrect as it misrepresents the purpose of the genetic modification.
- **Conclusion:** This option is incorrect.

### Final Answer:
The correct statement is **Option C: The anticoagulant herodin is being produced from Transgenic Brassica napus seeds.**