epistasis

American  

[ih-pis-tuh-sis] / ɪˈpɪs tə sɪs /

noun

plural

epistases

1. Genetics. a form of interaction between nonallelic genes in which one combination of such genes has a dominant effect over other combinations.

2. Medicine/Medical.

   1. the stoppage of a secretion or discharge.

   2. a scum that forms on a urine specimen upon standing.

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epistasis British  

/ ɪˈpɪstəsɪs, ˌɛpɪˈstætɪk /

noun

1. obsolete scum on the surface of a liquid, esp on an old specimen of urine

2. med the arrest or checking of a bodily discharge, esp bleeding

3. Also called: hypostasis.  genetics the suppression by a gene of the effect of another gene that is not its allele

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Other Word Forms

• epistatic adjective

Etymology

Origin of epistasis

First recorded in 1915–20, epistasis is from the Greek word epístasis stopping, stoppage. See epi-, stasis

Example Sentences

In Section 12.3, “Laws of Inheritance,” an example of epistasis was given for summer squash.

From Textbooks • Jun. 9, 2022

Often the biochemical basis of epistasis is a gene pathway in which the expression of one gene is dependent on the function of a gene that precedes or follows it in the pathway.

From Textbooks • Jun. 9, 2022

An example of epistasis is pigmentation in mice.

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