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Forensic Sci Int Genet. 2012 Sep;6(5):630-9. doi: 10.1016/j.fsigen.2012.02.004. Epub 2012 Mar 20.

Identification of single nucleotide polymorphisms within the mtDNA genome of the domestic dog to discriminate individuals with common HVI haplotypes.

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  • 1Canid Diversity and Conservation Laboratory, Center for Veterinary Genetics, University of California at Davis, Davis, CA 95616, USA.


We sequenced the entire ∼16 kb canine mitochondrial genome (mtGenome) of 100 unrelated domestic dogs (Canis lupus familiaris) and compared these to 246 published sequences to assess hypervariable region I (HVI) haplotype frequencies. We then used all available sequences to identify informative single nucleotide polymorphisms (SNPs) outside of the control region for use in further resolving mtDNA haplotypes corresponding to common HVI haplotypes. Haplotype frequencies in our data set were highly correlated with previous ones (e.g., F(ST)=0.02, r=0.90), suggesting the total data set reasonably reflected the broader dog population. A total of 128 HVI haplotypes was represented. The 10 most common HVI haplotypes (n=184 dogs) represented 53.3% of the sample. We identified a total 71 SNPs in the mtGenomes (external to the control region) that resolved the 10 most common HVI haplotypes into 63 mtGenome subhaplotypes. The random match probability of the dataset based solely on the HVI sequence was 4%, whereas the random match probability of the mtGenome subhaplotypes was <1%. Thus, the panel of 71 SNPs identified in this study represents a useful forensic tool to further resolve the identity of individual dogs from mitochondrial DNA (mtDNA).

Copyright © 2012 Elsevier Ireland Ltd. All rights reserved.

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