A disease that spreads from one generation to another is known as :

Question

Accepted Answer

A disease that spreads from one generation to another is known as a hereditary disease. Hereditary diseases are passed down through families via genetic information. These diseases are caused by abnormalities in an individual's genome, which can be inherited from one or both parents. Examples of hereditary diseases include cystic fibrosis, sickle cell anemia, and Huntington's disease. These conditions are encoded in the DNA and can be transmitted to offspring, making them generational.

Now, let's explain why the other options are incorrect:

1. **Communicable disease**: These are diseases that spread from one person to another through various means such as physical contact, air, water, or vectors like mosquitoes. Examples include the flu, COVID-19, and tuberculosis. They are not passed down genetically from one generation to another, but rather spread through environmental factors.

2. **Infectious disease**: Similar to communicable diseases, infectious diseases are caused by pathogens such as bacteria, viruses, fungi, or parasites. They spread through direct or indirect contact with an infected individual or through the environment. Examples include malaria, HIV/AIDS, and measles. Like communicable diseases, they are not inherited genetically.

3. **Deficiency disease**: These diseases occur due to a lack of essential nutrients in the diet, such as vitamins or minerals. Examples include scurvy (vitamin C deficiency) and rickets (vitamin D deficiency). Deficiency diseases are related to dietary habits and are not passed down genetically from one generation to another.

In conclusion, hereditary diseases are the only type of diseases that are transmitted genetically from one generation to the next, which is why Option 3 is the correct answer.