Measures of environmental variation in gene expression for MA and ancestral control (N2) lines.

Values in the column labeled “MA mean” are the mean of the four MA lines. Abbreviations in the column “Variable” are: CVE: Coefficient of Variation; sig VM: the set of genes for which there was significant mutational variance in [12]; no VM: the set of genes for which there was not significant mutational variance in [12]; Total: averaged over all genes; VE: raw (unscaled) environmental variance; VGENE: among-gene component of variance. See Methods for details of calculations. *- N2‡ - N22 = 38.5, df = 1, P<0.0001. ∥- N22 = 317.7, df = 1, P<0.0001.