Genetics plays an important role in the field of medical sciences. There arises a genetic base to a disease, the development, reproduction, and other processes in the body. The gene or a blueprint of life occurs in every cell and is an important inheriting factor. Hence, it is important to understand genes and their role in various diseases, cancers, developmental stages, and interactions with various components. Some of the genes encode for proteins. The genes get passed on from one generation to the next generation. They also carry any minute changes or mutations. The diverse population is a sign of variation. Due to recent advances in health research, more and more diseases showed a genetic base. The science of genetics helps in detecting many diseases. It helps in their treatment or prevention. When you try to understand the molecular intricacies of the genetic material, you will be amazed to see an entirely different world. Thousands of reactions keep occurring at a molecular level.