Scientists currently estimate that over 10,000 of human diseases are known to be monogenic. Pure genetic diseases are caused by a single error in a single gene in the human DNA. The nature of disease depends on the functions performed by the modified gene.
Lancaster, Wisconsin. Lancaster is a city in and the county seat of Grant County, Wisconsin, United States. The population was 3,868 at the 2010 census.
There is another Town of Waterloo in Grant County. Waterloo is a town in Jefferson County in the U.S. state of Wisconsin. The population was 909 at the 2010 census. The city of Waterloo is located within the town. The unincorporated community of Portland is also located partially in the town.