Tay-Sachs disease is caused by a defective gene on chromosome 15. When both parents carry the defective Tay-Sachs gene, a child has a 25% chance of developing the disease. The child must receive two copies of the defective gene -- one from each parent -- in order to become sick.
Enacted by law in 2013, the newest symbols of North Carolina are the state art medium, clay; the state fossil, the Megalodon teeth; the state frog, the Pine Barrens tree frog; the state marsupial, the Virginia opossum; and the state salamander, the Marbled salamander.
Location of the state of North Carolina in the United States of America. The state of North Carolina has 42 official state emblems, as well as other designated places and events. The majority are determined by acts of the North Carolina General Assembly and record in Chapters 144, 145, and 149 of the North Carolina General Statutes.