Figure 2
Phylogenic tree depicting relationships between whole-genome order of markers on bovine maps and sequence. Pairwise distances between maps are the 1 - Ï„, where Ï„ is Kendall's rank correlation coefficient. Whole-genome Ï„ values were computed by summing the number of inversions necessary to reconcile orders of each chromosome over all chromosomes. Maps included in the comparison are the Btau3.1 sequence assembly (Btau3.1), the BAC fingerprint map (BAC), the composite marker map, the third generation Illinois/Texas (ILTX-2005) radiation hybrid (RH) map [29], the Shirikawa (SIAG) RH map [30], and the SIAG-USDA linkage map [28]. BovGen RH and Alberta/Missouri (UAMU) linkage data also contribute to the composite map, but are not included here because an independent map of all markers scored on the BovGen panel is not available, and a lack of markers shared by UAMU and data sets other than BovGen precludes meaningful comparison.