Fundamentals of Cell Biology

In biology a strain is a genetic variant a subtype or a culture within a biological species. Strains are often seen as inherently artificial concepts characterized by a specific intent for genetic isolation.This is most easily observed in microbiology where strains are derived from a single cell colony and are typically quarantined by the physical constraints of a Petri dish. Strains are also commonly referred to within virology botany and with rodents used in experimental studies.