ring species

ring species
A biological species consisting of overlapping subgroups, each of which can interbreed with the next, but which cannot freely interbreed when taken as a whole

Ring species demonstrate that "can interbreed with" is not transitive.


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  • Ring species — In biology, a ring species is a connected series of neighboring populations that can interbreed with relatively closely related populations, but for which there exist at least two end populations in the series that are too distantly related to… …   Wikipedia

  • Ring species — Variation clinale Les variations des populations interfécondes (ici représentées par des blocs de couleurs) le long d une cline peuvent suivre une courbe, formant au final un anneau. Une variation clinale (ring species, « espèce en… …   Wikipédia en Français

  • ring species — /ˈrɪŋ spisiz/ (say ring speeseez) noun Biology a series of connected populations, each of which can interbreed with its neighbouring populations, the series being extended to the point where the two outer populations are so genetically remote… …  

  • 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 …   Wikipedia

  • Species group — A species group is an informal taxonomic rank into which an assemblage of closely related species within a genus are grouped because of their morphological similarities[1][2] and their identity as a biological unit with a single monophyletic… …   Wikipedia

  • Ring opening metathesis polymerisation — Ring opening metathesis polymerization (ROMP) is a type of olefin metathesis polymerization that produces industrially important products. The driving force of the reaction is relief of ring strain in cyclic olefins (e.g. norbornene or… …   Wikipedia

  • Ring-tailed Pigeon — Conservation status Vulnerable (IUCN 3.1) Scientific classification Kingdo …   Wikipedia

  • Ring-tailed ground squirrel — Conservation status Least Concern (IUCN 3.1)[1] …   Wikipedia

  • Ring — Ring, n. [AS. hring, hrinc; akin to Fries. hring, D. & G. ring, OHG. ring, hring, Icel. hringr, DAn. & SW. ring; cf. Russ. krug . Cf. {Harangue}, {Rank} a row,{Rink}.] A circle, or a circular line, or anything in the form of a circular line or… …   The Collaborative International Dictionary of English

  • Ring armor — Ring Ring, n. [AS. hring, hrinc; akin to Fries. hring, D. & G. ring, OHG. ring, hring, Icel. hringr, DAn. & SW. ring; cf. Russ. krug . Cf. {Harangue}, {Rank} a row,{Rink}.] A circle, or a circular line, or anything in the form of a circular line… …   The Collaborative International Dictionary of English

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