]> The deletion-based cytogenetic map of an organism is a type of low-resolution physical map. It is constructed using a "genome deletion panel" which consists of a series (or collection) of mutant lines containing sub-chromosomal deletions and a reference wild-type line. Markers can be mapped onto the genome using this panel (by Southern hybridization or by PCR) based on the presence or absence of signal when comparing the banding pattern in the mutants lines with the pattern in the wild type. Linked markers (present in the same deleted region) share the same banding pattern (presence or absence) on the deletion panel. Source Gramene: see http://www.gramene.org/db/cmap/map_type_info.