balanced polymorphism

balanced polymorphism
a state of equilibrium in which a genetic polymorphism is maintained by a balance between mutation and selection, heterozygotes for the locus having an advantage over either homozygote.

Medical dictionary. 2011.

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  • balanced polymorphism — balanced polymorphism. См. морфизм. (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.

  • balanced polymorphism — A polymorphism maintained in the same breeding population by a selective superiority of the heterozygotes over either type of homozygotes; see transient polymorphism …   Dictionary of invertebrate zoology

  • balanced polymorphism — Two or more phenotypes maintained in the same breeding population …   Glossary of Biotechnology

  • Polymorphism (biology) — Light morph Jaguar (typical) Dark morph or melanistic Jaguar (about …   Wikipedia

  • 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

  • transient polymorphism — Polymorphism existing in a breeding population during the period when an allele is being replaced by a superior one; see balanced polymorphism …   Dictionary of invertebrate zoology

  • 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

  • морфизм — balanced polymorphism, morphism сбалансированный полиморфизм, морфизм. Oтносительно стабильный (сохраняющийся на протяжении значительного числа генераций) внутрипопуляционный полиморфизм <polymorphism>, существующий вследствие адаптивных… …   Молекулярная биология и генетика. Толковый словарь.

  • insect — insectival /in sek tuy veuhl/, adj. /in sekt/, n. 1. any animal of the class Insecta, comprising small, air breathing arthropods having the body divided into three parts (head, thorax, and abdomen), and having three pairs of legs and usually two… …   Universalium

  • Balancing selection — refers to forms of natural selection which work to maintain genetic polymorphisms (or multiple alleles) within a population. Balancing selection is in contrast to directional selection which favors a single allele. A balanced polymorphism is a… …   Wikipedia

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