facultative heterochromatin formation siRNA-independent facultative heterochromatin formation https://github.com/geneontology/go-ontology/issues/22326 https://github.com/geneontology/go-ontology/issues/23553 GO:1902794 biological_process heterochromatin island assembly heterochromatin island formation The formation of facultative heterochromatin into a heterochromatin domain, enriched in histone H3 methylated on lysine 9 (H3K9me), by a process independent of small interfering RNAs. 2014-03-24T12:46:49Z mah siRNA-independent facultative heterochromatin assembly