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.
4. Synonym: trisomy 13. Patau's syndrome (trisomy 13) carries a high mortality rate with multiple congenital abnormalities which result in severe physical and mental impairment. 1  It is usually due to a free-standing trisomy with an extra number 13 chromosome, instead of the usual pair, in all cells.