organelle organization chromosome organization A process that is carried out at the cellular level that results in the assembly, arrangement of constituent parts, or disassembly of chromosomes, structures composed of a very long molecule of DNA and associated proteins that carries hereditary information. This term covers covalent modifications at the molecular level as well as spatial relationships among the major components of a chromosome. GO:0007001 GO:0051276 GO:0051277 biological_process chromosome organisation chromosome organization and biogenesis go.owl maintenance of genome integrity nuclear genome maintenance obi.owl