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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID 		au
agouti umbrous
MGI:1855943
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
 		au/au (C3H/HeH x 101/H)F1 MGI:2687030
ht2
 		au/a (C3H/HeH x 101/H)F1 MGI:2687037


Genotype
MGI:2687030
hm1
Allelic
Composition		 au/au
Genetic
Background		 (C3H/HeH x 101/H)F1
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
au mutation (1 available); any a mutation (468 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
pigmentation
abnormal coat/hair pigmentation ( J:13694 )
• dark agouti back and belly
• dark agouti pinna hairs
• resembles As

integument
abnormal coat/hair pigmentation ( J:13694 )
• dark agouti back and belly
• dark agouti pinna hairs
• resembles As




Genotype
MGI:2687037
ht2
Allelic
Composition		 au/a
Genetic
Background		 (C3H/HeH x 101/H)F1
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
a mutation (166 available); any a mutation (468 available)
au mutation (1 available); any a mutation (468 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
pigmentation
abnormal coat/hair pigmentation ( J:13694 )
• with a, coat is nonagouti on the back with dark agouti belly and pinna hairs are yellow
• with at, coat is nonagouti on the back with tan belly and pinna hairs are yellow

integument
abnormal coat/hair pigmentation ( J:13694 )
• with a, coat is nonagouti on the back with dark agouti belly and pinna hairs are yellow
• with at, coat is nonagouti on the back with tan belly and pinna hairs are yellow




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Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
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Send questions and comments to User Support. 		last database update
09/30/2025
MGI 6.24 		The Jackson Laboratory