Cystic fibrosis is a genetic disease that affects the lungs, digestive system, and other organs. It is caused by a mutation in the CFTR gene, which leads to the production of thick, sticky mucus that can clog the airways and cause breathing problems.

Down syndrome is a genetic disorder caused by the presence of an extra copy of chromosome 21. It is the most common genetic cause of intellectual disability and can also lead to a variety of physical and medical problems.

Sickle cell anemia is a genetic disease that affects the shape of red blood cells. It is caused by a mutation in the beta-globin gene, which leads to the production of abnormal hemoglobin molecules that can cause red blood cells to become sickle-shaped.

Tay-Sachs disease is a genetic disorder that affects the nervous system. It is caused by a mutation in the HEXA gene, which leads to the accumulation of a fatty substance called ganglioside GM2 in the brain. This accumulation can cause progressive loss of mental and physical abilities.

Muscular dystrophy is a group of genetic diseases that affect the muscles. It is caused by mutations in genes that encode proteins that are essential for muscle function. These mutations can lead to progressive muscle weakness and degeneration.

Celiac disease is a genetic disorder that affects the digestive system. It is caused by an immune reaction to gluten, a protein found in wheat, barley, and rye. This reaction can damage the lining of the small intestine and lead to difficulty digesting fats.

Epidermolysis bullosa is a group of genetic diseases that affect the skin. It is caused by mutations in genes that encode proteins that are essential for the structure and function of the skin. These mutations can lead to blisters, sores, and other skin problems.

Retinitis pigmentosa is a group of genetic diseases that affect the eyes. It is caused by mutations in genes that encode proteins that are essential for the function of the retina, the light-sensitive tissue at the back of the eye. These mutations can lead to progressive loss of vision.

Congenital heart disease is a group of birth defects that affect the heart. It is caused by mutations in genes that encode proteins that are essential for the development of the heart. These mutations can lead to a variety of heart problems, including holes in the heart, narrowed blood vessels, and abnormal heart rhythms.

Polycystic kidney disease is a genetic disorder that affects the kidneys. It is caused by mutations in genes that encode proteins that are essential for the development and function of the kidneys. These mutations can lead to the formation of cysts in the kidneys, which can interfere with kidney function and eventually lead to kidney failure.

Hemochromatosis is a genetic disorder that affects the liver. It is caused by mutations in genes that encode proteins that are involved in iron metabolism. These mutations can lead to the accumulation of iron in the liver, which can damage the liver and lead to liver failure.

Severe combined immunodeficiency (SCID) is a genetic disorder that affects the immune system. It is caused by mutations in genes that encode proteins that are essential for the development and function of the immune system. These mutations can lead to recurrent infections, which can be life-threatening.

Type 1 diabetes is a genetic disorder that affects the endocrine system. It is caused by mutations in genes that encode proteins that are essential for the production of insulin, a hormone that regulates blood sugar levels. These mutations can lead to the destruction of insulin-producing cells in the pancreas, which can result in diabetes.

Epilepsy is a group of genetic disorders that affect the nervous system. It is caused by mutations in genes that encode proteins that are essential for the function of the brain. These mutations can lead to seizures, which are sudden bursts of electrical activity in the brain that can cause a variety of symptoms, including loss of consciousness, convulsions, and muscle spasms.

Hemophilia is a group of genetic disorders that affect the blood clotting system. It is caused by mutations in genes that encode proteins that are essential for the formation of blood clots. These mutations can lead to easy bruising and bleeding, which can be life-threatening.