epistasis

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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:
Noun1.epistasis - the suppression of a gene by the effect of an unrelated gene
biological process, organic process - a process occurring in living organisms
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References in periodicals archive ?
It is clear from the definitions that the functions are multimodal with millions of local extremes, and Ackley function contains epistasy, i.e., it cannot be expressed as a sum of functions with one parameter.
Although very little is known about dominance and epistasy of the cost, this difference is a suitable explanation for the invasion of A4-B4 resistant allele.