Chromatin Immunoprecipitation analysis of H3K9me2 levels in the RNA Pol II 140 and small RNA pathway mutants. Chromatin immunoprecipitation analysis of indicated genotypes on the X axis was performed. The Y axis indicates fold difference changes in H3K9me2 at the white and tubulin loci between different genotypes. The figure at the bottom shows the inverted arrangement of the white locus in the vicinity of centromeric hetrochromatin and is enriched in H3K9me2. The tubulin locus is in euchromatin and is not significantly enriched in H3K9me2. Asterisk indicates P < 0.05 from four different replicas.