Estimate of nucleotide diversity in dogs with a pool-and-sequence method

Estimate of nucleotide diversity in dogs with a pool-and-sequence method Nucleotide diversity (π), the average number of base differences per site for two homologous sequences randomly selected from a population, is an important parameter used to understand the structure and history of populations. It is also important for determining the feasibility of developing a genetic map for a species from single nucleotide polymorphisms (SNPs). Nucleotide diversity has never been estimated for dogs. Segments of twelve canine genes from ten diverse dog breeds were examined for nucleotide variation by using a pool-and-sequence method. We identified three SNPs in the coding regions (2501 bp) and 11 SNPs in the introns (2953 bp). Each of these putative SNPs was tested by restriction enzyme analysis, and all were verified. Six additional SNPs were identified in a single SINE contained in one gene. Using these data, canine sequence diversity across breeds was estimated to be 0.001 and 0.0004 in intronic and coding regions, respectively, with SNPs spaced every 400 bp on average. Discovery of useful SNPs in 7 of the 12 genes suggests that construction of a canine SNP-based map can be accomplished with current technology. Thirteen polymorphic SNPs were also found in 5847 bp in the cat, horse, ox, and pig, by using four of the same genes from which canine nucleotide diversity was estimated. These results suggest that these species may have similar amounts of nucleotide diversity. Mammalian Genome Springer Journals

Estimate of nucleotide diversity in dogs with a pool-and-sequence method

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Copyright © 2000 by Springer-Verlag New York Inc.
Life Sciences; Cell Biology; Animal Genetics and Genomics; Human Genetics
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