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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID 		Mc1rtaw
tawny
MGI:1857788
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
 		Mc1rtaw/Mc1rtaw M. m. molossinus MGI:3689974
ht2
 		Mc1rtaw/Mc1re involves: M. m. molossinus * C57BL/6J MGI:3689992


Genotype
MGI:3689974
hm1
Allelic
Composition		 Mc1rtaw/Mc1rtaw
Genetic
Background		 M. m. molossinus
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Mc1rtaw mutation (0 available); any Mc1r mutation (43 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
pigmentation
yellow coat color ( J:98397 )
• the yellow band of each hair is greatly lengthened and the basal black band shorter compared to wild-type
decreased ear pigmentation ( J:98397 )
• ear skin is lighter than wild-type
decreased tail pigmentation ( J:98397 )
• pigment is lighter than wild-type

hearing/vestibular/ear
decreased ear pigmentation ( J:98397 )
• ear skin is lighter than wild-type

limbs/digits/tail
decreased tail pigmentation ( J:98397 )
• pigment is lighter than wild-type

craniofacial
decreased ear pigmentation ( J:98397 )
• ear skin is lighter than wild-type

integument
yellow coat color ( J:98397 )
• the yellow band of each hair is greatly lengthened and the basal black band shorter compared to wild-type
decreased ear pigmentation ( J:98397 )
• ear skin is lighter than wild-type
decreased tail pigmentation ( J:98397 )
• pigment is lighter than wild-type

growth/size/body
decreased ear pigmentation ( J:98397 )
• ear skin is lighter than wild-type




Genotype
MGI:3689992
ht2
Allelic
Composition		 Mc1rtaw/Mc1re
Genetic
Background		 involves: M. m. molossinus * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Mc1re mutation (4 available); any Mc1r mutation (43 available)
Mc1rtaw mutation (0 available); any Mc1r mutation (43 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
pigmentation
yellow coat color ( J:55617 )
• the yellow coat color of the F1 demonstrates allelism; however, hair of the F1 contains black pigment characteristic of homozygous Mc1rtaw mice, demonstrating that Mc1rtaw is dominant to Mc1re

integument
yellow coat color ( J:55617 )
• the yellow coat color of the F1 demonstrates allelism; however, hair of the F1 contains black pigment characteristic of homozygous Mc1rtaw mice, demonstrating that Mc1rtaw is dominant to Mc1re




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Send questions and comments to User Support. 		last database update
04/16/2024
MGI 6.23 		The Jackson Laboratory