DNA stores information that is needed for passing down our genetic characteristics from one generation to the next â for example, what we look like and how we develop â hence it is also known as our genetic blueprint. Half of each person's DNA comes from their mother and the other half from their father. Back to Top.
Small Area Variations. Definition. Health Economics. A term usually applied to the observed wide variations in clinical practices within jurisdictions having otherwise similar health care organizational structures and payments systems, and having populations with similar demographic, economic, social and epidemiological characteristics.
Catchment areas are generally established and modified by local governments. These boundaries can be modeled using geographic information systems (GIS). There can be large variability in the services provided within different catchments in the same area depending upon how and when those catchments were established. Supermarkets, on the other hand, have a much lower density, with catchment areas of several neighborhoods (or several villages in rural areas). 2  This principle, similar to the central place theory, makes catchment areas an important area of study for geographers, economists, and urban planners.