Schematic diagram of the genomic location and the annotated genes for each sequenced BAC. The location of each sequenced BAC is indicated by purple stripes on chromosomes. The annotation of the sequenced BAC is shown next to its location. Red arrows indicate class I genes with open reading frames, blue arrows indicate non-class I genes with open reading frames, grey arrows indicate pseudogenes, green arrows indicate KERV sequences. A full list of genes and co-ordinates can be found in Additional file 1.