Trangenic animals are generally produced for all of the following needs except:

Options

A. testing of chemical safety
B. tesing of vaccine safety
C. stimulation of pathogenicity
D. production of pharmacologically important proteins

Answer

To solve the question regarding the purposes for which transgenic animals are produced, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Transgenic Animals**: Transgenic animals are organisms that have had their DNA modified to express genes from other species. This genetic engineering allows them to exhibit certain traits or produce specific substances.

2. **Identify the Purposes of Transgenic Animals**:
- **Testing of Clinical Safety**: Transgenic animals can be used to assess the safety of new drugs or treatments before they are tested on humans.
- **Testing of Vaccine Safety**: They are also utilized to evaluate the safety and efficacy of vaccines, ensuring that they do not cause adverse effects.
- **Production of Pharmacologically Important Proteins**: Transgenic animals can produce valuable proteins in their milk or other tissues, which can be harvested for medical use (e.g., insulin, antibodies).

3. **Analyze the Options Given**:
- **Testing of Clinical Safety**: This is a valid purpose for transgenic animals.
- **Testing of Vaccine Safety**: This is also a valid purpose.
- **Stimulation of Pathogenicity**: This option does not align with the common uses of transgenic animals. They are not typically produced for the purpose of stimulating disease processes.
- **Production of Pharmacologically Important Proteins**: This is a recognized purpose for creating transgenic animals.

4. **Conclusion**: Based on the analysis, the option that does not represent a purpose for producing transgenic animals is "stimulation of pathogenicity." Therefore, the correct answer is:

**Answer**: Stimulation of pathogenicity.