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Unexpectedly High Allelic Diversity at the KIT Locus Causing DominantWhite Color in the Domestic Pig
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Molecular Medicine. Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Genetics and Pathology.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Molecular Medicine. (A-C Syvänen)
2002 (English)In: Genetics, ISSN 0016-6731, E-ISSN 1943-2631, Vol. 160, no 1, 305-311 p.Article in journal (Refereed) Published
Abstract [en]

Mutations in KIT encoding the mast/stem cell growth factor receptor (MGF) are responsible for coat color variation in domestic pigs. The dominant white phenotype is caused by two mutations, a gene duplication and a splice mutation in one of the copies leading to skipping of exon 17. Here we applied minisequencing and pyrosequencing for quantitative analysis of the number of copies with the splice form. An unexpectedly high genetic diversity was revealed in white pigs. We found four different KIT alleles in a small sample of eight Large White females used as founder animals in a wild boar intercross. A similar number of KIT alleles was found in commercial populations of white Landrace and Large White pigs. We provide evidence for at least two new KIT alleles in pigs, both with a triplication of the gene. The results imply that KIT alleles with the duplication are genetically unstable and new alleles are most likely generated by unequal crossing over. This study provides an improved method for genotyping the complicated Dominant white/KIT locus in pigs. The results also suggest that some alleles may be associated with negative pleiotropic effects on other traits.

Place, publisher, year, edition, pages
2002. Vol. 160, no 1, 305-311 p.
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-62280PubMedID: 11805065OAI: oai:DiVA.org:uu-62280DiVA: diva2:90191
Available from: 2006-03-15 Created: 2006-03-15 Last updated: 2017-11-30Bibliographically approved

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PubMedhttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC1461930/pdf/11805065.pdf

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Pielberg, GerliSyvänen, Ann-Christine

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