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.
Cause of Pfeiffer Syndrome. Pfeiffer syndrome is caused by gene mutations. In most cases, these mutations arise randomly. We donât fully understand what causes this. However, it doesnât appear that the mutation occurs as a result of something either parent does or fails to do.ause of Pfeiffer Syndrome. Pfeiffer syndrome is caused by gene mutations. In most cases, these mutations arise randomly. We donât fully understand what causes this. However, it doesnât appear that the mutation occurs as a result of something either parent does or fails to do.