fig1

Figure 1. The related genes in the key region of Prader-Willi syndrome. Subtypes I ranged from BP1 to BP3 at approximately 6.2 Mb, subtypes II ranged from BP2 to BP3 at approximately 5.3 Mb, subtypes III ranged from BP1 to BP4 at approximately 7.4 Mb, and subtypes IV ranged from BP1 to BP5 at approximately 9 Mb. Red represents maternally imprinted genes, green represents paternally imprinted genes, and black represents allele expression. BP: Breakpoint.