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.
NORTH CAROLINA STATE FLAG. North Carolina, known as âThe Old North Stateâ and âThe Tarheel State,â adopted an official State Flag in 1885. This red, white, and blue flag features a white star with the letters âNâ and âCâ in gold on either side.