normal cellular process during vegetative growth normal spatial extent of heterochromatin assembly to boundary element IRL normal spatial extent of heterochromatin assembly to boundary element IRL during vegetative growth A cellular process phenotype observed in the vegetative growth phase of the life cycle in which heterochromatin is assembled up to, but not beyond, the IRL boundary element in the silent mating-type cassette, as in wild type. FYPO:0006986 normal spatial extent of heterochromatin assembly to boundary element IRL at silent mating type locus midori normal spatial extent of heterochromatin assembly to boundary element IRL during mitotic cell cycle 2019-07-30T14:13:02Z