Ideogram of pigeon (A) and peregrine falcon (B) chromosomes. Numbered rectangles represent chromosomes, and colored blocks inside represent regions of homeology with chicken chromosomes. Lines within the colored blocks represent block orientation. Pigeon chromosomes 1–9 and Z were numbered according to the method of Hansmann et al. (2009) and the remaining chromosomes according to their chicken homeologs. Falcon chromosomes 1–13 and Z were numbered accordingly to the method of Nishida et al. (2008). The remaining chromosomes were numbered by decreasing combined length of the placed PCFs. Triangles above the falcon chromosomes point to the positions of falcon-specific fusions; below chromosomes, the positions of fissions. Black filling within the triangles point to the EBR boundaries used in the CNE analysis.
