“„Genetic disorders are transmitted from one generation to the next and are caused by mutations to the reproductive cells. Sickle cell anemia is a classic example of a genetic disorder. Polycythemia vera is not a genetic disorder. It is not transmitted from generation to generation. The disorder may have a genetic component in that a somatic cell (body cell) mutation, as opposed to a reproductive cell mutation, may be associated with the disease. It may be that environmental exposures cause or contribute to the somatic mutation.