Fig. 2
From: Structure of the intergenic spacers in chicken ribosomal DNA
Chicken IGS length variants. Structure of three IGS from the WAG137G04 BAC clone (IGS_I, IGS_II, IGS_III) and an IGS present in the AADN04001305.1 contig of Gallus_gallus-5.0. a Detailed comparative figures of IGS structural elements distribution. Repeat deficiency regions are designated with fine black lines. b Contracted IGS figures, central block repeats are organized into tetrads