GEPHE SUMMARY Print
Entry Status
Published
GepheID
GP00000501
Main curator
Martin
PHENOTYPIC CHANGE
Trait Category
Trait
Trait State in Taxon A
Canis familiaris - Small breeds
Trait State in Taxon B
Canis familiaris - Giant breeds
Ancestral State
Data not curated
Taxonomic Status
Taxon A
Latin Name
Common Name
gray wolf
Synonyms
gray wolf; grey wolf; Canis lupus Linnaeus, 1758
Rank
species
Lineage
Show more ... rata; Gnathostomata; Teleostomi; Euteleostomi; Sarcopterygii; Dipnotetrapodomorpha; Tetrapoda; Amniota; Mammalia; Theria; Eutheria; Boreoeutheria; Laurasiatheria; Carnivora; Caniformia; Canidae; Canis
NCBI Taxonomy ID
is Taxon A an Infraspecies?
No
Taxon B
Common Name
dog
Synonyms
Canis canis; Canis domesticus; Canis familiaris; dog; dogs
Rank
subspecies
Lineage
Show more ... tomata; Teleostomi; Euteleostomi; Sarcopterygii; Dipnotetrapodomorpha; Tetrapoda; Amniota; Mammalia; Theria; Eutheria; Boreoeutheria; Laurasiatheria; Carnivora; Caniformia; Canidae; Canis; Canis lupus
NCBI Taxonomy ID
is Taxon B an Infraspecies?
Yes
Taxon B Description
Canis familiaris - Giant breeds
GENOTYPIC CHANGE
Generic Gene Name
Igf1
Synonyms
Igf-1; Igf-I; C730016P09Rik
String
-
Sequence Similarities
Belongs to the insulin family.
GO - Biological Process
GO:0043066 : negative regulation of apoptotic process ... show more
UniProtKB
Mus musculus
GenebankID or UniProtKB
Presumptive Null
Molecular Type
Aberration Type
Molecular Details of the Mutation
Not identified / several haplotypes
Experimental Evidence
Authors
Sutter NB; Bustamante CD; Chase K; Gray MM; Zhao K; Zhu L; Padhukasahasram B; Karlins E; et al. ... show more
Abstract
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.
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