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speciation gene

См. также в других словарях:

  • Speciation — Part of a series on Evolutionary Biology …   Wikipedia

  • Gene flow — In population genetics, gene flow (also known as gene migration) is the transfer of alleles of genes from one population to another.Migration into or out of a population may be responsible for a marked change in allele frequencies (the proportion …   Wikipedia

  • Gene duplication — Schematic of a region of a chromosome before and after a duplication event Gene duplication (or chromosomal duplication or gene amplification) is any duplication of a region of DNA that contains a gene; it may occur as an error in homologous… …   Wikipedia

  • Gene pool — In population genetics, a gene pool is the complete set of unique alleles in a species or population. Description A large gene pool indicates extensive genetic diversity, which is associated with robust populations that can survive bouts of… …   Wikipedia

  • Sympatric speciation — is the genetic divergence of various populations (from a single parent species) inhabiting the same geographic region, such that those populations become different species. Etymologically, sympatry is derived from the roots sym (meaning same,… …   Wikipedia

  • 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

  • Coévolution gène-culture — Coévolution En biologie, le terme coévolution[1] désigne les transformations qui se produisent au cours de l évolution de deux espèces vivantes suite à leurs influences réciproques. Le phénomène de coévolution est souvent observé dans les… …   Wikipédia en Français

  • Coévolution gène culture — Coévolution En biologie, le terme coévolution[1] désigne les transformations qui se produisent au cours de l évolution de deux espèces vivantes suite à leurs influences réciproques. Le phénomène de coévolution est souvent observé dans les… …   Wikipédia en Français

  • Parapatric speciation — is a form of speciation that occurs due to variations in mating frequency of a population within a continuous geographical area. In this model, the parent species lives in a continuous habitat, in contrast with allopatric speciation where… …   Wikipedia

  • Horizontal gene transfer — (HGT), also Lateral gene transfer (LGT), is any process in which an organism incorporates genetic material from another organism without being the offspring of that organism. By contrast, vertical transfer occurs when an organism receives genetic …   Wikipedia

  • parapatric speciation — the differentiation into distinct species of populations experiencing some gene flow …   Dictionary of ichthyology

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