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The Vertebrate Trait Ontology (VT) is being developed as a collaborative effort between the Rat Genome Database at the Medical College of Wisconsin (RGD,, Mouse Genome Informatics at the Jackson Laboratory ( and the Animal QTL database at Iowa State University ( For more information about this vocabulary, or to request additions or changes, please contact us (

Term:organ system trait
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Accession:VT:0015074 term browser browse the term
Definition:Any measurable or observable characteristic of an anatomical group that has as its parts distinct anatomical structures interconnected by anatomical structures at a lower level of granularity.
Synonyms:xref: CARO:0000011;   TAO:0001439

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coat/hair pigmentation trait term browser
Symbol Object Name Evidence Notes Source PubMed Reference(s) RGD Reference(s) Position
G Asip agouti signaling protein ISO Coat colour, saddle tan vs black-and-tan
Coat colour, agouti
OMIA PMID:8202545 PMID:12692166 PMID:15520882 PMID:15965787 PMID:17630272 More... NCBI chr 3:143,473,584...143,561,170
Ensembl chr 3:143,555,696...143,561,171
JBrowse link
G Defb14 defensin beta 14 ISO Coat colour, dominant black OMIA PMID:12692166 PMID:15649147 PMID:17483404 PMID:17947548 PMID:19197024 More... NCBI chr16:70,663,443...70,668,473
Ensembl chr16:70,663,333...70,666,540
JBrowse link
G Mc1r melanocortin 1 receptor ISO Coat colour, melanistic mask OMIA PMID:12692165 PMID:21353269 PMID:29932470 PMID:33672409 PMID:34751460 NCBI chr19:51,452,448...51,455,375
Ensembl chr19:51,453,239...51,454,192
JBrowse link
G Pmel premelanosome protein ISO Coat colour, merle OMIA PMID:330141 PMID:340189 PMID:418699 PMID:3099512 PMID:3998446 More... NCBI chr 7:1,138,202...1,148,735
Ensembl chr 7:1,138,586...1,148,746
JBrowse link
G Psmb7 proteasome 20S subunit beta 7 ISO Coat colour, harlequin OMIA PMID:3270445 PMID:3998446 PMID:18513894 PMID:21256207 PMID:31658272 More... NCBI chr 3:22,357,777...22,417,748
Ensembl chr 3:22,354,698...22,417,937
JBrowse link
macrophage migration trait term browser
Symbol Object Name Evidence Notes Source PubMed Reference(s) RGD Reference(s) Position
G Nr4a1 nuclear receptor subfamily 4, group A, member 1 IDA RGD PMID:24722447 RGD:12910103 NCBI chr 7:132,368,399...132,389,300
Ensembl chr 7:132,374,840...132,389,297
JBrowse link

Term paths to the root
Path 1
Term Annotations click to browse term
  vertebrate trait 1523
    organ system trait 872
      alimentary system trait + 73
      circulatory system trait + 59
      endocrine/exocrine system trait + 97
      hemolymphoid system trait + 28
      immune system trait + 27
      integumentary system trait + 29
      muscular system trait + 0
      nervous/sensory system trait + 115
      reproductive system trait + 62
      respiratory system trait + 10
      urinary system trait + 172
paths to the root