Human genetic disease, any of the diseases and disorders that are caused by mutations in one or more genes. 1  With the increasing ability to control infectious and nutritional diseases in developed countries, there has come the realization that genetic diseases are a major cause of disability, death, and human tragedy.
Lancaster is situated within the Blackland Prairie region of Texas, which is characterized by level to gently rolling topography. Ten Mile Creek and its tributaries are a major drainage feature in and around the city.
Harker Heights is a city in Bell County, Texas, United States. The population was 17,308 at the 2000 census. This makes Harker Heights the 3rd largest city in Bell County, after Killeen and Temple. Incorporated in 1960, the city name is derived from the name of one of the two original landowners and founder, Harley Kern. Harker Heights is part of the KilleenâTempleâFort Hood Metropolitan Statistical Area.