epistasis

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Related to epistatic: dominant epistasis, modifier genes

e·pis·ta·sis

(ĭ-pĭs′tə-sĭs)
n. pl. e·pis·ta·ses (-sēz′)
1. An interaction between nonallelic genes in which the genotype at one locus affects the expression of alleles at another locus.
2. A film that forms over the surface of a urine specimen.
3. The suppression of a bodily discharge or secretion.

[Greek, stoppage, from epistanai, to stop, check : ep-, epi-, epi- + histanai, to place; see stā- in Indo-European roots.]

ep′i·stat′ic (ĕp′ĭ-stăt′ĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

epistasis

(ɪˈpɪstəsɪs)
n
1. (Medicine) obsolete scum on the surface of a liquid, esp on an old specimen of urine
2. (Medicine) med the arrest or checking of a bodily discharge, esp bleeding
3. (Genetics) genetics Also called: hypostasis the suppression by a gene of the effect of another gene that is not its allele
[C19: from Greek: a stopping, from ephistanai to stop, from epi- + histanai to put]
epistatic adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

e•pis•ta•sis

(ɪˈpɪs tə sɪs)

n., pl. -ses (-ˌsiz)
a form of interaction between nonallelic genes in which one combination of such genes has a dominant effect over other combinations.
[1915–20; probably after epistatic (1907) (probably epi- + static, taken as meaning “standing above”)]
ep•i•stat•ic (ˌɛp əˈstæt ɪk) adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun 1. epistasis - the suppression of a gene by the effect of an unrelated gene
biological process, organic process - a process occurring in living organisms
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
Five female families which included ma, black and white were also discarded because the recessive white gene, when homozygous, is epistatic over all other color loci.
Certain gene or genes with dominant or epistatic effects are involved in the control of gray leaf spot resistance.
Further, there was evidence of epistatic interactions of genes affecting infection levels of both pathogens.
As a consequence, a full digenic epistatic model with all parameters of progeny, maternal and maternal by progeny interaction was not possible to evaluate for the lines raised at 25 [degrees] C.
Further, the epistatic gene effects cannot be estimated by a conventional line x tester model.
The classical epistatic model included all the possible genetic interaction effects among multiple loci.
Ravindrababu and Pathak (2000) suggested additive and epistatic gene effects for resistant x resistant crosses whereas for resistant x susceptible crosses additive, dominance, and epistatic (additive x dominance) effects were important for resistance to shoot fly.
While individual traits can directly affect an individual's fitness, multiple traits often have epistatic effects on fitness (Whitlock et al.
Additive gene action is effectively responsive to selection whereas, non-additive gene action (dominance and epistatic) enhances the hybrid vigor in cross combination of inbred lines.

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