Which of the following is a transgenic plant?

Options

A. Hirudin
B. Flavr savr
C. Triticale
D. All of these

Answer

To determine which of the following options is a transgenic plant, we will analyze each option provided:

1. **Herodine**:
- Herodine is an anticoagulant produced from the seeds of a transgenic plant called Brassica napus (a variety of mustard). However, Herodine itself is not a plant; it is a product derived from a transgenic plant. Therefore, this option is not correct.

2. **Flavr**:
- Flavr is a variety of tomato known for its enhanced production of ethylene, which improves its taste. This variety has been genetically modified, making it a transgenic plant. Therefore, this option is correct.

3. **Shevr**:
- There is no specific information provided about Shevr in the transcript, but it is not mentioned as a transgenic plant. Hence, we cannot consider it as a transgenic plant based on the information given.

4. **Triticale**:
- Triticale is a hybrid between wheat and rye. It is not genetically modified or transgenic; it is a naturally occurring hybrid. Therefore, this option is also incorrect.

5. **All of these**:
- Since only Flavr is identified as a transgenic plant, this option is incorrect.

Based on the analysis above, the correct answer is **Flavr**, which is a transgenic plant.

### Summary of Steps:
1. Analyze each option to determine if it is a transgenic plant.
2. Identify that Herodine is a product, not a plant.
3. Confirm that Flavr is a transgenic plant.
4. Note that Shevr is not identified as transgenic.
5. Recognize that Triticale is a hybrid, not transgenic.
6. Conclude that the only transgenic plant listed is Flavr.