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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:integumentary system morphology trait
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Accession:VT:0100020 term browser browse the term
Definition:Any measurable or observable characteristic related to the shape, structure, color, or pattern of the system consisting of the skin and its derivatives.

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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, agouti OMIA PMID:12692166 PMID:15520882 PMID:15965787 PMID:17630272 PMID:21321476 PMID:21846741 PMID:22433982 PMID:22524303 PMID:23519866 PMID:32635139 NCBI chr 3:143,473,584...143,561,170 JBrowse link
G Defb14 defensin beta 14 ISO Coat colour, dominant black OMIA PMID:12692166 PMID:15649147 PMID:17483404 PMID:17947548 PMID:19197024 PMID:21321476 PMID:24098367 NCBI chr16:70,663,443...70,668,473 JBrowse link
G Mc1r melanocortin 1 receptor ISO Coat colour, melanistic mask OMIA PMID:12692165 PMID:21353269 PMID:29932470 PMID:33672409 NCBI chr19:51,452,448...51,455,375 JBrowse link
G Pmel premelanosome protein ISO Coat colour, merle OMIA PMID:330141 PMID:340189 PMID:418699 PMID:3099512 PMID:3998446 PMID:4031467 PMID:6323572 PMID:6410614 PMID:6817463 PMID:7006993 PMID:12580795 PMID:16407134 PMID:16504149 PMID:17186850 PMID:19192156 PMID:27387721 PMID:30071510 PMID:30123327 PMID:30235206 PMID:31238727 PMID:32560567 NCBI chr 7:1,138,202...1,148,735 JBrowse link
G Psmb7 proteasome 20S subunit beta 7 ISO Coat colour, harlequin OMIA PMID:3270445 PMID:3998446 PMID:18513894 PMID:21256207 NCBI chr 3:22,357,777...22,417,748 JBrowse link
G Raly RALY heterogeneous nuclear ribonucleoprotein ISO Coat colour, saddle tan vs black-and-tan OMIA PMID:23519866 PMID:33672409 NCBI chr 3:143,306,039...143,370,542 JBrowse link

Term paths to the root
Path 1
Term Annotations click to browse term
  vertebrate trait 2385
    organ system trait 1554
      integumentary system trait 30
        integumentary system morphology trait 30
          skin adnexa morphology trait + 30
          skin morphology trait + 0
Path 2
Term Annotations click to browse term
  vertebrate trait 2385
    organism subdivision trait 186
      surface structure trait 186
        surface structure morphology trait 186
          integumentary system morphology trait 30
            skin adnexa morphology trait + 30
            skin morphology trait + 0
paths to the root