Selectable Markers
Selectable markers are genetic elements that can be used in the laboratory to identify cells or organisms containing a particular trait. They are typically expressed in a binary fashion, so that either the presence or absence of the marker can be readily determined, allowing for selection of cells or organisms containing the trait of interest. Selectable markers are often used in biotechnology and genetic engineering for the purpose of creating genetically modified organisms (GMOs). By inserting a selectable marker into a species’ genome, researchers can easily determine and select for the GMO organisms from the non-GMO organisms. Selectable markers are also used in plants to select for crop traits of interest, such as herbicide resistance. Ultimately, selectable markers provide a tool for quickly and efficiently identifying desired traits, making them an important part of biotechnological research.
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