The marker usually exists as an isodicentric chromosome; i.e. 2 copies of a specific part of the long arm of chromosome 15 (most commonly, 15q11.2-q13.1) that is mirrored and doubled, with 2 centromeres and 2 DNA satellites.
DNA | satellite | Sirius Satellite Radio | DNA sequencing | Mitochondrial DNA | XM Satellite Radio | communications satellite | DNA replication | Satellite | satellite television | mitochondrial DNA | Natural satellite | DNA repair | Communications satellite | Astro (satellite TV) | Sleeping Satellite | Satellite television | International Telecommunications Satellite Organization | DNA polymerase | ancient DNA | Six Finger Satellite | Recombinant DNA | Polar Satellite Launch Vehicle | nuclear DNA | natural satellite | Geostationary Operational Environmental Satellite | DNA profiling | DNA ligase | Defense Meteorological Satellite Program | Ancient DNA |