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. As of the 2010 census there were 26,700 people, 9,488 households, and 7,139 families residing in the city, up from a population of 17,308 in 2000. This makes Harker Heights the third largest city in Bell County, after Killeen and Temple.