There are three types of genetic disorders: 1  Single-gene disorders, where a mutation affects one gene. Sickle cell anemia is an example. 2  Chromosomal disorders, where chromosomes (or parts of chromosomes) are missing or changed. Chromosomes are the structures that hold our genes. 3  Complex disorders, where there are mutations in two or more genes.
OSI model. The Open Systems Interconnection model (OSI model) is a conceptual model that characterizes and standardizes the communication functions of a telecommunication or computing system without regard to their underlying internal structure and technology. Its goal is the interoperability of diverse communication systems with standard protocols.
United States Air Force Office of Special Investigations. The United States Air Force Office of Special Investigations (AFOSI or OSI) is a U.S. federal law enforcement agency that reports directly to the Office of the Secretary of the Air Force. Operating worldwide, AFOSI provides independent criminal investigative, counterintelligence and protective service operations outside of the traditional military chain of command.