increased nucleosome occupancy increased nucleosome occupancy at transcription start site 2021-02-23T16:01:13Z increased nucleosome occupancy at TSS increased nucleosome occupancy at transcription start site during mitotic cell cycle midori FYPO:0007656 increased nucleosome occupancy at transcription start site during vegetative growth A cellular process phenotype observed in the vegetative growth phase of the life cycle in which nucleosome occupancy is higher than normal at transcription start sites. Nucleosome occupancy measures the tendency for DNA in a given region to be packaged into nucleosomes.