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单词 epistasy
释义

epistasyn.

Brit. /ᵻˈpɪstəsi/, U.S. /iˈpɪstəsi/
Forms: 1900s– epistacy, 1900s– epistasy.
Origin: A variant or alteration of another lexical item. Etymon: epistasis n.
Etymology: Alteration of epistasis n. (compare epistasis n. 3) after nouns in -y suffix3. Compare German Epistasie (1913 or earlier), and perhaps also ancient Greek ἐπιστασία dominion (since the phenomenon involving non-allelic genes is equivalent to dominance (dominance n. 2) in allelic genes).With the form epistacy perhaps compare -acy suffix.
Genetics. rare.
= epistasis n. 3.
ΚΠ
1918 R. A. Fisher in Trans. Royal Soc. Edinb. 52 404 A similar deviation from the addition of superimposed effects may occur between different Mendelian factors. We may use the term Epistacy to describe such deviation, which although potentially more complicated, has similar statistical effects to dominance.
1949 C. D. Darlington & K. Mather Elements of Genetics vii. 157 Epistasy comes in at all stages of development, early and obvious or late and inferential.
2006 Plant Cell 18 860/1 Because of the similar phenotypes of the single mutants, epistasy could not be determined.
This entry has been updated (OED Third Edition, March 2014; most recently modified version published online March 2022).
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n.1918
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