Heredity is the process by which traits are passed from parents to offspring through genes, determining physical and biological characteristics. Genetic diseases occur due to mutations or abnormalities in genes or chromosomes. Common examples include Down syndrome, sickle cell anemia, cystic fibrosis, hemophilia, and thalassemia, affecting health and development.
Heredity passes traits from parents to offspring, while variation creates differences among individuals of the same species.
Common genetic diseases include Down syndrome, sickle cell anemia, cystic fibrosis, hemophilia, and thalassemia.