abnormal nucleosome positioning in euchromatin increased nucleosome occupancy at highly transcribed RNA polymerase II genes FYPO:0005950 midori A cellular process phenotype observed in the vegetative growth phase of the life cycle in which nucleosome occupancy is greater than normal in chromatin regions where RNA polymerase II actively transcribes genes. Nucleosome occupancy measures the tendency for DNA in a given region to be packaged into nucleosomes. increased nucleosome occupancy at highly transcribed RNA polymerase II genes during mitotic cell cycle 2017-03-15T16:12:25Z increased nucleosome occupancy at highly transcribed RNA polymerase II genes during vegetative growth