Abstract:
:To resolve a candidate chromosome region on the middle part of bovine chromosome 6 (BTA6) containing several different quantitative trait locus (QTL) intervals, we constructed a high-resolution, integrated, comprehensive, and comparative map using a 12,000-rad, whole-genome, cattle-hamster radiation hybrid (RH) panel. The RH map includes a total of 71 loci either selected from bovine and comparative maps or targeted directly from a microdissection library specific for the BTA6 region. All loci typed were placed in one linkage group at a lod score threshold of 4.0. The length of the comprehensive RH map, which is the first high-resolution RH map in cattle, spans 2568.8 cR(12,000). The order of markers obtained principally agrees with the order on published bovine genetic maps. Our RH map integrates markers as well as genes and ESTs available from several physical and genetic maps of BTA6 and the orthologous ovine chromosome 6, human chromosome 4, and mouse chromosomes 5/3. Comparative analysis confirms and refines current knowledge about conservation and rearrangements in corresponding chromosomal regions on BTA6. We identified and localized two new breakpoints for intrachromosomal rearrangements between human chromosome 4 and BTA6. This RH map is a powerful tool in all aspects of genetic, physical, transcript, and comparative mapping. Due to its links to the gene-dense maps of human and mouse, it can serve as a prerequisite to identify possible candidate genes for quantitative trait loci localized in the targeted BTA6 region.
journal_name
Genomicsjournal_title
Genomicsauthors
Weikard R,Kühn C,Goldammer T,Laurent P,Womack JE,Schwerin Mdoi
10.1006/geno.2002.6778subject
Has Abstractpub_date
2002-06-01 00:00:00pages
768-76issue
6eissn
0888-7543issn
1089-8646pii
S0888754302967789journal_volume
79pub_type
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