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Strain (biology)

  In biology, strain is a low-level taxonomic rank used in three related ways.


A strain is a genetic variant or subtype of a virus or bacterium. For example, a "flu strain" is a certain biological form of the influenza or "flu" virus. Compare clade.


The term has no official status in botany; the term cultivar is instead used.


A mouse or a rat strain is a group of animals that is genetically uniform. Strains are used in laboratory experiments. Mouse strains can be inbred, mutated or genetically engineered, while rat strains are usually inbred.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Strain_(biology)". A list of authors is available in Wikipedia.
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