Figure 4
Large-scale chromosomal duplication between the CTCF-associated paralogons in the chicken genome. The diagonal lines show the positions of the genes in the boxes in the chicken genome assembly GRCg6a, while the vertical lines indicate the entire chromosomes, 11, 20, and 2 in order. The members of the same gene families that were confirmed by molecular phylogeny inference to be derived from two-round WGDs are aligned on the same vertical levels. The dashed boxes indicate the genes (including CTCFL) missing in this genome assembly probably because of its secondary loss during evolution.
