Species

Species

In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring.

About Species

In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are often used, such as similarity of DNA, morphology or ecological niche. Presence of specific locally adapted traits may further subdivide species into "infraspecific taxa" such as subspecies (and in botany other taxa are used, such as varieties, subvarieties, and formae). Species that are believed to have the same ancestors are grouped together, and this group is called a genus. A species will be placed in only one genus (although taxonomic opinion might change). Similarity is best checked by the similarity of their DNA, but for practical reasons, other properties are used. All species are given a two-part name, a "binomial name".

Contributions by Tannin, Pengo, and Brya.

New Questions for Species

See All Questions