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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID 		Oca2p-66H
pink-eyed dilution 66 Harwell
MGI:5301926
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
 		Oca2p-66H/Oca2p-66H involves: 101/H MGI:5301967
ht2
 		Oca2p-66H/Oca2p involves: 101/H MGI:5301966


Genotype
MGI:5301967
hm1
Allelic
Composition		 Oca2p-66H/Oca2p-66H
Genetic
Background		 involves: 101/H
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Oca2p-66H mutation (0 available); any Oca2 mutation (70 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
integument
abnormal coat/hair pigmentation ( J:179354 )
• coat is slightly darker than in Oca2p homozygotes

pigmentation
abnormal coat/hair pigmentation ( J:179354 )
• coat is slightly darker than in Oca2p homozygotes




Genotype
MGI:5301966
ht2
Allelic
Composition		 Oca2p-66H/Oca2p
Genetic
Background		 involves: 101/H
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Oca2p mutation (11 available); any Oca2 mutation (70 available)
Oca2p-66H mutation (0 available); any Oca2 mutation (70 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
integument
abnormal coat/hair pigmentation ( J:179354 )
• ruby eyes, light colored ears and tail, sandy brown tips to fur, dark under fur

pigmentation
abnormal coat/hair pigmentation ( J:179354 )
• ruby eyes, light colored ears and tail, sandy brown tips to fur, dark under fur

limbs/digits/tail

vision/eye




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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