Meaning of epistasis

e•pis•ta•sis

Pronunciation: (i-pis'tu-sis), [key]
— pl. -ses
  1. a form of interaction between nonallelic genes in which one combination of such genes has a dominant effect over other combinations.
    1. the stoppage of a secretion or discharge.
    2. a scum that forms on a urine specimen upon standing.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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