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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID 		Aiy
intermediate yellow
MGI:1855933
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
 		Aiy/Aiy C3H/HeJ-Aiy MGI:3821619
ht2
 		Aiy/A C3H/HeJ-Aiy MGI:3821616


Genotype
MGI:3821619
hm1
Allelic
Composition		 Aiy/Aiy
Genetic
Background		 C3H/HeJ-Aiy
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Aiy 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:30922 )
• homozygotes and heterozygotes are indistinguishable
yellow coat color ( J:30922 )
• color ranges from very sooty yellow to indistinguishable from wild-type agouti
• ventrum is slightly lighter than dorsal pigmentation
mottled coat ( J:30922 )
• mottling is variable

growth/size/body
obese ( J:30922 )
• become obese as adults

integument
abnormal coat/hair pigmentation ( J:30922 )
• homozygotes and heterozygotes are indistinguishable
yellow coat color ( J:30922 )
• color ranges from very sooty yellow to indistinguishable from wild-type agouti
• ventrum is slightly lighter than dorsal pigmentation
mottled coat ( J:30922 )
• mottling is variable

Mouse Models of Human Disease
 DO ID OMIM ID(s) Ref(s)
obesity DOID:9970 OMIM:601665
 J:30922




Genotype
MGI:3821616
ht2
Allelic
Composition		 Aiy/A
Genetic
Background		 C3H/HeJ-Aiy
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
A mutation (80 available); any a mutation (468 available)
Aiy 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:30922 )
• heterozygotes and homozygotes are indistinguishable
yellow coat color ( J:30922 )
• color ranges from very sooty yellow to indistinguishable from wild-type agouti
• ventrum is slightly lighter than dorsal pigmentation
mottled coat ( J:30922 )
• mottling is variable

growth/size/body
obese ( J:30922 )
• become obese as adults

integument
abnormal coat/hair pigmentation ( J:30922 )
• heterozygotes and homozygotes are indistinguishable
yellow coat color ( J:30922 )
• color ranges from very sooty yellow to indistinguishable from wild-type agouti
• ventrum is slightly lighter than dorsal pigmentation
mottled coat ( J:30922 )
• mottling is variable

Mouse Models of Human Disease
 DO ID OMIM ID(s) Ref(s)
obesity DOID:9970 OMIM:601665
 J:30922




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