The main stem of the Bay itself is about 189 miles (304 km) long, from the Susquehanna River in the north to the Atlantic Ocean in the south. At its narrowest point near Annapolis, Maryland, the Bay is 4 miles (6.4 km) wide; at its widest point, near the mouth of the Potomac River, it is 30 miles (50 km) wide.
Patau syndrome. Patau syndrome is a syndrome caused by a chromosomal abnormality, in which some or all of the cells of the body contain extra genetic material from chromosome 13. The extra genetic material disrupts normal development, causing multiple and complex organ defects.
Causes of Tourette Syndrome. Tourette Syndrome (TS) is a complex, neurological condition and it is not yet known what causes it. The condition is hereditary and a person with TS has, roughly, a 50 per cent chance of passing on the gene to their children. This doesnât mean, though, that the child will inherit an identical form of TS.