Strain (biology)

[1] 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.

New viral strains can be created due to mutation or swapping of genetic components when two or more viruses infect the same cell in nature.

While funding for such research has aroused controversy at times due to safety concerns, leading to a temporary pause, it has subsequently proceeded.

These strains, such as BL21, are genetically modified to minimize protease activity, hence enabling potential for high efficiency industrial scale protein production.

[12] A strain is a designated group of offspring that are either descended from a modified plant (produced by conventional breeding or by biotechnological means), or which result from genetic mutation.

[14][15][16] The common fruit fly (Drosophila melanogaster) was among the first organisms used for genetic analysis, has a simple genome, and is very well understood.

Various specific strains have been developed, including a flightless version with stunted wings (also used in the pet trade as live food for small reptiles and amphibians).