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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID 		Asy
sienna yellow
MGI:1855935
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
 		Asy/Asy C57BL/6J-Asy/a/J MGI:3052032
ht2
 		Asy/a C57BL/6J-Asy/a/J MGI:3052033


Genotype
MGI:3052032
hm1
Allelic
Composition		 Asy/Asy
Genetic
Background		 C57BL/6J-Asy/a/J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Asy mutation (2 available); any a mutation (468 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
pigmentation
yellow coat color ( J:13497 )
• extreme amount and distribution of phaeomelanin produces a clear yellow color

integument
yellow coat color ( J:13497 )
• extreme amount and distribution of phaeomelanin produces a clear yellow color




Genotype
MGI:3052033
ht2
Allelic
Composition		 Asy/a
Genetic
Background		 C57BL/6J-Asy/a/J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
a mutation (166 available); any a mutation (468 available)
Asy mutation (2 available); any a mutation (468 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
pigmentation
yellow coat color ( J:13497 )
• dark or sooty yellow due to black tips on otherwise yellow hair

integument
yellow coat color ( J:13497 )
• dark or sooty yellow due to black tips on otherwise yellow hair




Contributing Projects:
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