Publication Date:
2007-04-07
Description:
The domestic dog exhibits greater diversity in body size than any other terrestrial vertebrate. We used a strategy that exploits the breed structure of dogs to investigate the genetic basis of size. First, through a genome-wide scan, we identified a major quantitative trait locus (QTL) on chromosome 15 influencing size variation within a single breed. Second, we examined genetic variation in the 15-megabase interval surrounding the QTL in small and giant breeds and found marked evidence for a selective sweep spanning a single gene (IGF1), encoding insulin-like growth factor 1. A single IGF1 single-nucleotide polymorphism haplotype is common to all small breeds and nearly absent from giant breeds, suggesting that the same causal sequence variant is a major contributor to body size in all small dogs.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2789551/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉 〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2789551/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Sutter, Nathan B -- Bustamante, Carlos D -- Chase, Kevin -- Gray, Melissa M -- Zhao, Keyan -- Zhu, Lan -- Padhukasahasram, Badri -- Karlins, Eric -- Davis, Sean -- Jones, Paul G -- Quignon, Pascale -- Johnson, Gary S -- Parker, Heidi G -- Fretwell, Neale -- Mosher, Dana S -- Lawler, Dennis F -- Satyaraj, Ebenezer -- Nordborg, Magnus -- Lark, K Gordon -- Wayne, Robert K -- Ostrander, Elaine A -- 063056/PHS HHS/ -- 5T32 HG002536/HG/NHGRI NIH HHS/ -- P50 HG002790/HG/NHGRI NIH HHS/ -- R01 GM063056/GM/NIGMS NIH HHS/ -- R01 GM063056-06/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 2007 Apr 6;316(5821):112-5.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉National Human Genome Research Institute, Building 50, Room 5349, 50 South Drive MSC 8000, Bethesda, MD 20892-8000, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17412960" target="_blank"〉PubMed〈/a〉
Keywords:
Alleles
;
Animals
;
Body Size/genetics
;
Breeding
;
Dogs/*anatomy & histology/*genetics
;
Exons
;
Genetic Variation
;
Genotype
;
Haplotypes
;
Heterozygote
;
Insulin-Like Growth Factor I/*genetics/metabolism
;
Introns
;
Mutation
;
*Polymorphism, Single Nucleotide
;
Quantitative Trait Loci
;
Selection, Genetic
;
Sequence Analysis, DNA
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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