Fig. 4.From: Inter-embryo gene expression variability recapitulates the hourglass pattern of evo-devoHistone modification signal, expression variability, and promoter sequence conservation. Red represents Spearman’s correlation coefficient between histone modification signal and expression variability; blue represents spearman’s correlation coefficient between histone modification signal and promoter sequence conservation. Here, for each gene, both its variability and its histone modification signal are the mean value across stages. ***p value < 10−16Back to article page