Genetic engineering has been successfully used for producing

Options

A. Transgenic mice for testing safety of polio vaccine before use in humans
B. Transgenic models for studying new treatments for certain cardiac deseases
C. Transgenic cow-Rosie, which produces high-fat milk for making ghee
D. Animals like bulls for farm work as they have super power

Answer

**Step-by-Step Solution:**

1. **Understanding Genetic Engineering**: Genetic engineering involves the manipulation of an organism's genes using biotechnology. It allows scientists to modify the genetic makeup of organisms to produce desired traits.

2. **Identifying Applications of Genetic Engineering**: Genetic engineering has various applications, including the creation of transgenic organisms. Transgenic organisms contain genes from other species, which can help in research, agriculture, and medicine.

3. **Evaluating the Options**:
- **Option 1**: Transgenic mice for testing the safety of polio vaccine before use in humans.
- **Option 2**: Transgenic models for studying new treatments for certain cardiac diseases.
- **Option 3**: Transgenic cow (Rosie) which produces high-fat milk for making ghee.
- **Option 4**: Animals like bulls for farm work as they have super power.

4. **Analyzing Option 1**: Transgenic mice are commonly used in biomedical research. They can be engineered to carry genes that make them susceptible to certain diseases, which allows researchers to study disease mechanisms and test vaccines, such as the polio vaccine.

5. **Conclusion**: Based on the analysis, the correct answer is **Option 1**: Transgenic mice for testing the safety of the polio vaccine before use in humans.

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