. "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." . . "chromosome organization" . "chromosome organisation" . "chromosome organization and biogenesis" . "maintenance of genome integrity" . "nuclear genome maintenance" . . . . . . . . . . . . . . . . . . . . . . . .