Genetics is very important for understanding human health. It helps us learn more about how different diseases and health conditions happen.

1. What is Genetics?
   Genetics is the study of how traits are passed down from parents to their children. It looks at what makes us unique and how these features can change.

2. Why is Genetics Important in Biology?

   • Understanding Diseases: About 60% of human diseases may have a connection to our genes. For example, people with a family history of heart disease are 2 to 3 times more likely to face similar health issues.
   • Genetic Disorders: Around 1 in 200 babies is born with a serious genetic disorder, such as cystic fibrosis or sickle cell anemia. These examples show how changes in our genes can affect health.

3. Heritability Estimates:
   Some traits can be influenced a lot by genetics. For instance, the chances of getting diabetes can be up to 80% genetic, which means our family genes play a big role.

In summary, using genetics in health research is very important. It helps us create better treatments that fit individual needs, understand the risks of genetic diseases, and improve how we treat people.