EOG82NMH0 GO:0005704 1/15 polytene chromosome band cellular_component "A stretch of densely packed chromatin along the polytene chromosome, visible as a morphologically distinct band." [GOC:bf, PMID:11361342] EOG82NMH0 GO:0010369 1/15 chromocenter cellular_component "A region in which centric, heterochromatic portions of one or more chromosomes form a compact structure." [PMID:12384572, PMID:15053486, PMID:16831888] EOG82NMH0 GO:0006325 1/15 chromatin organization biological_process "Any process that results in the specification, formation or maintenance of the physical structure of eukaryotic chromatin." [GOC:mah] EOG82NMH0 GO:0005730 1/15 nucleolus cellular_component "A small, dense body one or more of which are present in the nucleus of eukaryotic cells. It is rich in RNA and protein, is not bounded by a limiting membrane, and is not seen during mitosis. Its prime function is the transcription of the nucleolar DNA into 45S ribosomal-precursor RNA, the processing of this RNA into 5.8S, 18S, and 28S components of ribosomal RNA, and the association of these components with 5S RNA and proteins synthesized outside the nucleolus. This association results in the formation of ribonucleoprotein precursors; these pass into the cytoplasm and mature into the 40S and 60S subunits of the ribosome." [ISBN:0198506732] EOG82NMH0 GO:0035012 1/15 polytene chromosome, telomeric region cellular_component "The terminal region of a polytene chromosome." [GOC:bf] EOG82NMH0 GO:0005720 1/15 nuclear heterochromatin cellular_component "A condensed form of chromatin, occurring in the nucleus during interphase, that stains strongly with basophilic dyes. The DNA of heterochromatin is typically replicated at a later stage in the cell-division cycle than euchromatin." [ISBN:0198506732] EOG82NMH0 GO:0005701 1/15 polytene chromosome chromocenter cellular_component "A region at which the centric regions of polytene chromosomes are joined together." [GOC:bf, ISBN:0120649012] EOG82NMH0 GO:0005700 1/15 polytene chromosome cellular_component "A type of chromosome in a polyploid cell, formed when multiple copies of homologous chromosomes are aligned side by side to give a giant chromosome in which distinct chromosome bands are readily visible." [ISBN:0198506732]