Polymorphism or dimorphism may refer to:



  • Polymorphism (biology), including:
    • having multiple phenotypes within a population; the switch that determines which phenotype an individual displays can be genetic or environmental
      • includes Sexual dimorphism, differences in the physiology of a species based only on sex
    • having multiple alleles of a gene within a population, usually expressing different phenotypes
  • Lipid polymorphism, the property of amphiphiles that gives rise to various aggregations of lipids
  • Nuclear dimorphism, when a cell's nuclear apparatus is composed of two structurally and functionally differentiated types of nuclei
  • Frond dimorphism, differing forms of fern fronds between the sterile and fertile fronds




  • A type of QRS complex seen on an electrocardiogram


See also

  • Polymorph (disambiguation)
  • Monomorphic (disambiguation)

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  • Polymorphism — Pol y*mor phism, n. 1. (Crystallog.) Same as {Pleomorphism}. [1913 Webster] 2. (Biol.) (a) The capability of assuming different forms; the capability of widely varying in form. (b) Existence in many forms; the coexistence, in the same locality,… …   The Collaborative International Dictionary of English

  • polymorphism — polymorphism. См. полиморфизм. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • polymorphism —  Polymorphism  Полиморфизм   Способность некоторых минералов и иных кристаллических веществ существовать при одном и том же химическом составе в состояниях с различной атомной кристаллической структурой. Каждое из таких состояний… …   Толковый англо-русский словарь по нанотехнологии. - М.

  • polymorphism — [päl΄i môr′fiz΄əm] n. [ POLYMORPH(OUS) + ISM] 1. Chem. Mineralogy the property of certain substances of crystallizing in two or more different forms or systems 2. Biol. the condition in which a species has two or more very different morphological …   English World dictionary

  • polymorphism — polymorphistic, adj. /pol ee mawr fiz euhm/, n. 1. the state or condition of being polymorphous. 2. Crystall. crystallization into two or more chemically identical but crystallographically distinct forms. 3. Biol. the existence of an organism in… …   Universalium

  • polymorphism — 1. The occurrence of allelic variation at a locus. Polymorphism in nucleotide sequences has provided powerful diagnostic tools. See: DNA diagnostics, microsatellites, restriction fragment length polymorphism 2. The occurrence of two or more forms …   Glossary of Biotechnology

  • Polymorphism — A variation in the DNA that is too common to be due merely to new mutation. A polymorphism must have a frequency of at least 1% in the population. Examples of polymorphisms include the genes for sickle cell disease, thalassemia and G6PD… …   Medical dictionary

  • polymorphism — polimorfizmas statusas T sritis chemija apibrėžtis Medžiagų savybė būti kelių skirtingos struktūros atmainų. atitikmenys: angl. polymorphism rus. полиморфизм …   Chemijos terminų aiškinamasis žodynas

  • polymorphism — polimorfizmas statusas T sritis fizika atitikmenys: angl. polymorphy; polymorphism vok. Polymorphie, f; Polymorphismus, m rus. полиморфизм, m; полиморфия, f pranc. polymorphisme, m …   Fizikos terminų žodynas

  • polymorphism — polimorfizmas statusas T sritis ekologija ir aplinkotyra apibrėžtis Labai skirtingos formos individų buvimas vienoje augalų arba gyvūnų rūšyje. atitikmenys: angl. polymorphism vok. Polymorphismus, m; Vielgestaltigkeit, f rus. полиморфизм, m …   Ekologijos terminų aiškinamasis žodynas

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