noun Date: 1947 the condition wherein a heterozygote produces a phenotype more extreme or better adapted than that of the homozygote • overdominant adjective

New Collegiate Dictionary. 2001.

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  • Overdominance — is a condition in genetics where the phenotype of the heterozygote lies outside of the phenotypical range of both homozygote parents. Overdominance can also be described as heterozygote advantage, wherein heterozygous individuals have a higher… …   Wikipedia

  • overdominance — overdominance. См. отрицательный эффект двойной дозы. (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.

  • overdominance — superdominavimas statusas T sritis augalininkystė apibrėžtis Alelinių genų sąveika, kai heterozigotiniai individai požymių raiška lenkia homozigotinius individus. atitikmenys: angl. overdominance; superdominance rus. сверхдоминирование …   Žemės ūkio augalų selekcijos ir sėklininkystės terminų žodynas

  • overdominance — o·ver·dom·i·nance (ō vər dŏmʹə nəns) n. The condition of a heterozygote having a phenotype that is more pronounced or better adapted than that of either homozygote.   o ver·domʹi·nant adj. * * * …   Universalium

  • overdominance — noun The state of a gene wherein a heterozygote has a higher risk of disease than either of its homozygote parents …   Wiktionary

  • overdominance — That state in which the heterozygote has greater phenotype value and perhaps is more fit than the homozygous state for either of the alleles that it comprises. Cf.:balanced polymorphism. * * * over·dom·i·nance däm( ə) nən(t)s n the property of… …   Medical dictionary

  • overdominance — Where heterozygote performance is superior to that of either parental genotype …   Glossary of Biotechnology

  • overdominance — ˌ ̷ ̷  ̷ ̷ ˈ ̷ ̷  ̷ ̷  ̷ ̷ noun Etymology: over (III) + dominance : the property of having a heterozygote that produces a phenotype more extreme or better adapted than that of the homozygote • overdominant ¦ ̷ ̷  ̷ ̷ ¦ ̷ ̷  ̷ ̷  ̷ ̷ adjective …   Useful english dictionary

  • Dominance versus overdominance — is a scientific controversy in the field of genetics that has persisted for more than a century.[1] These two alternative hypotheses were first stated in 1908. Genetic basis of heterosis When a population is small or inbred, it tends to lose… …   Wikipedia

  • Polar overdominance — is a unique form of inheritance (described in sheep) whereby a mutant Callipyge allele must be inherited from the father to cause muscle hypertrophy (big buttocks).ee also*Imprinting (genetics)External links*… …   Wikipedia

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