Table 1. Statistical comparison of H3K9me2 levels.

Genotype	wm4	wm4; z2/+	wm4; z2/z2	wm4; CTD	wm4; ΔCTD
wt	p < 0.001	p < 0.001	p > 0.4	p > 0.5	p > 0.8
wm4	-	p > 0.9	p < 0.001	p < 0.001	p < 0.001
wm4; z2/+	-	-	p < 0.001	p < 0.001	p < 0.001
wm4; z2/z2	-	-	-	p > 0.8	p > 0.5
wm4; CTD	-	-	-	-	p > 0.7

For each genotype the average relative enrichment from three sets of measurements were compared using a two-tailed Student’s t-test.