Residents of the District of Columbia lack full democratic representation in the U. S. Senate or the U.S. House of Representatives. Representation in Congress is limited to a non-voting delegate to the House of Representatives and a shadow Senator.
Huntington's disease is a progressive brain disorder caused by a single defective gene on chromosome 4 â one of the 23 human chromosomes that carry a personâs entire genetic code. This defect is dominant, meaning that anyone who inherits it from a parent with Huntington's will eventually develop the disease.
As the abnormal protein accumulates, it causes pathological changes that lead to the symptoms of Huntingtonâs disease. Huntingtonâs disease is inherited in an autosomal dominant manner. All nucleated cells of the human body contain 46 chromosomes, with 23 derived from each parent.