Chromoanagenesis is a genomic catastrophe that results in chromosomal shattering and reassembly. These extreme single chromosome events were first identified in cancer. and have since been observed in other systems. but have so far only been formally documented in plants in the context of haploid induction crosses. https://www.roneverhart.com/Terry-s-Milk-Orange-Chocolate-with-Popping-Candy-12-Piece-Case/