Consensus and comprehensive linkage maps of bovine chromosome 7

The objective of this project was to integrate the currently available link age maps for bovine chromosome 7 (BTA7) by combining data sets from eight r esearch groups. A total of 54 unique markers were typed in eight pedigrees. Multilocus linkage analysis with CRI-MAP produced a bovine chromosome 7 co nsensus framework map of 27 loci ordered with odds greater than 1000 : 1. F urthermore, we present a bovine chromosome 7 comprehensive map integrating 54 loci. The locus order is in general agreement with the recently publishe d linkage maps except for one discrepancy. The order of loci BM9289, BMS713 , and ILSTS001 was reversed in the consensus framework map relative to the published USDA-MARC bovine chromosome 7 linkage map.