A genetic disorder is a disease caused by a different form of a
gene called a variation, or an alteration of a gene called a
mutation. Many diseases have a genetic aspect. Some, including
many cancers, are caused by a mutation in a gene or group of
genes in a person's cells. These mutations can occur randomly or
because of an environmental exposure such as cigarette smoke.
Other genetic disorders are inherited. A mutated gene is passed
down through a family and each generation of children can
inherit the gene that causes the disease. Still other genetic
disorders are due to problems with the number of packages of
genes called chromosomes. In Down syndrome, for example, there
is an extra copy of chromosome 21. This is a great application
that discusses the most important topics in genetic disorders.
This application is ideal for all medical professionals, medical
residents and interns, nurses, medical students, and of course
curious lay people who just want to learn more about genetic
disorders. Genetics & Bir