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.
The ultimate sources of variation, the source of new heritable characteristics in populations and species, are due to mutation and recombination in chromosomes, genes, DNA. The frequency of a gene, or allele, in a population is due to number of forces: forces increasing variability, and forces decreasing variability. Forces increasing population variability. Four important allelic forces drive population heterogeneity.