Journal
CYTOGENETIC AND GENOME RESEARCH
Volume 119, Issue 3-4, Pages 225-230Publisher
KARGER
DOI: 10.1159/000112065
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Tobiano is a white spotting pattern in horses caused by a dominant gene, Tobiano ( TO). Here, we report TO associated with a large paracentric chromosome inversion on horse chromosome 3. DNA sequences flanking the inversion were identified and a PCR test was developed to detect the inversion. The inversion was only found in horses with the tobiano pattern, including horses with diverse genetic backgrounds, which indicated a common genetic origin thousands of years ago. The inversion does not interrupt any annotated genes, but begins approximately 100 kb downstream of the KIT gene. This inversion may disrupt regulatory sequences for the KIT gene and cause the white spotting pattern. This manuscript is accompanied by supplemental figures S1, S2 and S3, as well as supplemental Tables S1 and S2 (www.karger.com/doi/10.1159/000112065). The DNA sequence generated in this work has been submitted to GenBank under the following accession number: EF442014. Copyright (c) 2007 S. Karger AG, Basel.
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