Plasmid — extrachromosomal DNA elements, biology and applications Plasmid Plasmids are independently replicating DNA molecules, usually circular, found mainly in bacteria. This article explains their structure, transfer mechanisms, ecological roles, hist…
Selectable marker (molecular biology) Selectable marker A selectable marker is a genetic element introduced with an experimental DNA construct that allows researchers to recover cells that have taken up or maintained the new DNA under s…
