epistasis
Americannoun
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epistases
plural
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Genetics. a form of interaction between nonallelic genes in which one combination of such genes has a dominant effect over other combinations.
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Medicine/Medical.
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the stoppage of a secretion or discharge.
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a scum that forms on a urine specimen upon standing.
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noun
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obsolete scum on the surface of a liquid, esp on an old specimen of urine
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med the arrest or checking of a bodily discharge, esp bleeding
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Also called: hypostasis. genetics the suppression by a gene of the effect of another gene that is not its allele
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Etymology
Origin of epistasis
First recorded in 1915–20, epistasis is from the Greek word epístasis stopping, stoppage. See epi-, stasis
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
An example of epistasis is pigmentation in mice.
From Textbooks ● Jun. 9, 2022
In epistasis, the interaction between genes is antagonistic, such that one gene masks or interferes with the expression of another.
From Textbooks ● Jun. 9, 2022
In Section 12.3, “Laws of Inheritance,” an example of epistasis was given for summer squash.
From Textbooks ● Jun. 9, 2022
Some would argue that epistasis — complex interactions among genetic variants — has long been under-appreciated.
From Nature ● Oct. 7, 2014
Often the biochemical basis of epistasis is a gene pathway in which expression of one gene is dependent on the function of a gene that precedes or follows it in the pathway.
From Textbooks ● Apr. 25, 2013
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