Is a rare motor disorder is caused by a defective gene on chromosome 4.

Huntington's disease is a motor disorder that is caused by a defective gene on chromosome 4. In addition, this disorder causes the nerve cells in the nervous system to degenerate thus causing emotional instabilities and uncontrollable movements due to the nerve cell damages taking place.

Ifound this information on google “yes. they have a mouth and brain at one end and an anus at the opposite end. what characteristics distinguish an annelid from other worms? annelids have segmented bodies and a coelem which is a tube filled with fluid and contains most of the organs.“ i hope it you