allopatric species

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• Allopatric speciation — Allopatric speciation, also known as geographic speciation, is the phenomenon whereby biological populations are physically isolated by an extrinsic barrier and evolve intrinsic (genetic) reproductive isolation, such that if the barrier breaks… …   Wikipedia

• allopatric — [al΄ō pa′trik, al΄əpa′trik] adj. [< ALLO + Gr patra, native village (< patēr, FATHER) + IC] Biol. of or pertaining to species of organisms occurring in different but often adjacent areas allopatrically adv. allopatry [ə läp′ə trē] n …   English World dictionary

• 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

• allopatric — /æləˈpætrɪk/ (say aluh patrik) adjective of or relating to species occurring in different geographical areas although descended from a common ancestor: allopatric speciation. Compare sympatric. {allo + Greek patria fatherland} –allopatry… …  

• allopatric — [ˌalə patrɪk] adjective Biology (of animal or plant species or populations) occurring in separate non overlapping geographical areas. Compare with sympatric. Derivatives allopatry noun Origin 1940s: from allo + Gk patra fatherland + ic …   English new terms dictionary

• allopatric — al•lo•pat•ric [[t]ˌæl əˈpæ trɪk[/t]] adj. ecl (of populations of the same or similar species) occupying separate ranges and unavailable for interbreeding • Etymology: 1940–45; allo + Gk patr(ía) fatherland (der. of patḗr father) + ic al… …   From formal English to slang

• allopatric — adjective (of biological species or speciation) occurring in areas isolated geographically from one another • Ant: ↑sympatric • Derivationally related forms: ↑allopatry • Topics: ↑biology, ↑biological science …   Useful english dictionary

• collective species — superspecies (a monophyletic group of allopatric species that are too distinct to be regarded as a single species; a cluster of incipient species (semispecies)) …   Dictionary of ichthyology

• Latitudinal gradients in species diversity — The pattern= The increase in species richness or biodiversity that occurs from the poles to the tropics, often referred to as the latitudinal gradient in species diversity, is one of the most widely recognized patterns in ecology. Put another way …   Wikipedia

• Cryptic species complex — In biology, a cryptic species complex is a group of species which satisfy the biological definition of species that is, they are reproductively isolated from each other but whose morphology is very similar (in some cases virtually identical). The …   Wikipedia

• incipient species —   Populations that are in the process of diverging to the point of speciation but which still have the potential to interbreed even though they are prevented from doing so by a specific barrier.   See also allopatric speciation, isolating… …   Expanded glossary of Cycad terms