Overview
Selectable markers are genetic elements that can be used to identify cells in which a particular gene or genes have been disrupted. They are most commonly used in molecular biology and genetic engineering experiments, and allow researchers to select cells that have successfully been genetically altered, as opposed to examining each individual cell. Selectable markers can be used to detect the presence of foreign DNA during genetic transformation, measure gene expression, and to study gene regulatory networks. Selectable markers are important in the study of genetic engineering because they make it easier for researchers to identify cells with desirable characteristics, allowing for the development of more efficient methods for genetic manipulation.