Question

Transgenic animals are used to understand the contribution of genes in the development of diseases such as:

• A. Cholera and typhoid
• B. Elephantiasis and ringworm
• C. Cancer and cystic fibrosis
• D. Pneumonia and kala-azar

Hint:

Transgenic animals are valuable tools in studying genetic disorders like cancer and cystic fibrosis, as they mimic human genetic conditions.

Answer 1

The Correct Option is C

Transgenic animals are animals that have been genetically modified to contain genes from other species. These animals are often used in research to study the effects of specific genes on diseases.
Step 1: Understanding the options.
- Cholera and typhoid (Option 1): These are infectious diseases caused by bacteria, not typically studied in transgenic animals.
- Elephantiasis and ringworm (Option 2): These are parasitic and fungal infections, not the primary focus of transgenic animal studies.
- Cancer and cystic fibrosis (Option 3): Both of these are genetic disorders that can be studied using transgenic animals. For example, transgenic mice are commonly used in cancer research, and cystic fibrosis has been studied using genetically modified animals to understand the genetic basis and develop treatments.
- Pneumonia and kala-azar (Option 4): These are infectious diseases, typically studied through other methods, not specifically involving transgenic animals.
Step 2: Conclusion.
Transgenic animals are used to study the genetic basis of cancer and cystic fibrosis.
Final Answer: \[ \boxed{\text{The correct answer is (3) Cancer and cystic fibrosis.}} \]