Table 1.

Refinement of gaps in synteny between dog and fox. Four dog chromosomes map in more than one syntenic block to the fox genome, meaning a single dog chromosome is syntenic to more than one contiguous region of the fox as the result of either a fission event in the dog lineage or a fusion event in the fox lineage. The breakpoints and sizes of the unassigned regions as refined by previous analysis [44] are indicated in the third and fourth columns, respectively. High-resolution mapping in the present study allowed for refinement of the breakpoints, as indicated in the fifth and sixth columns. All genomic locations are based on CanFam3.1. RACA fragment 1a is excluded due to its lack of markers.

Fox Chromosomes	Dog Chromosome	Previously Unassigned Positions on Dog Chromosome (bp)	Previous Gap Size (Kbp)	Dog Chromosome Positions Still Unassigned (bp)	Updated Gap Size (Kbp)
1 & 5	1	24,600,000–25,700,000	1100	24,988,836–25,579,247	590.4
2 & 13	13	37,800,000–38,600,000	800	38,258,211–38,277,954	19.7
5 (2 fragments)	18	24,400,000–26,000,000	1600	25,259,332–25,332,083	72.8
4 & 5	19	18,800,000–22,100,000	3300	19,878,341–20,333,685	455.3