Fig. 1

A GTG-banded human chromosome 15 at about 850 haploid band level is depicted; at its right side an idiogram is shown. The black and white bands are numbered according to an international consensus (the ISCN nomenclature—light gray caption). The ISCN based nomenclature does not describe the band splitting from shorter to larger chromosomes—this biologically based band splitting (BBBS) is different (acc. to [18] in gray caption)