Which application of genetic engineering involves creating research animals that mimic diseases?

• A. Transgenic plants
• B. Genetically engineered animals
• C. Microbial fermentation
• D. Cell line development

Answer: (B)

The application that involves creating research animals that mimic diseases is known as genetically engineered animals. This field utilizes genetic engineering techniques to introduce, modify, or delete specific genes in animals. As a result, these animals can present symptoms, progression, or characteristics of human diseases, acting as valuable models for studying the underlying mechanisms of those diseases, testing new drugs, and evaluating potential treatments.

Creating genetically modified animals, such as mice engineered to develop specific cancers or neurological disorders, provides researchers with an important framework for understanding disease processes. This research can yield insights that are often difficult to obtain through other models. The development of these animal models can accelerate translational research—the process of applying discoveries made in the laboratory to potential therapeutic interventions for humans.

Transgenic plants and microbial fermentation are primarily focused on agricultural applications and biotechnology processes for producing substances, rather than creating disease models. Similarly, cell line development is more about establishing cultures of cells for various experiments rather than generating whole organisms that can mimic complex diseases. Thus, the creation of genetically engineered animals specifically caters to the need for advanced models in medical research.