The predicted expression pattern of imprinted genes in the Dlk1-Dio3 domain. The position of the imprinted genes is indicated by squares, vertical bars (small nucleolar RNAs), or triangles (microRNAs). The elements are shown in gray when inactive, in pink when active on the maternal allele, and in blue when active on paternal allele. IG-DMR and Gtl2-DMR are indicated by circles (filled circles, hypermethylated; open circles, hypomethylated).