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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID 		Rr45+
wild type
MGI:6144002
Summary 1 genotype
Jump to Allelic Composition Genetic Background Genotype ID
cx1
 		Rr45tm1.1Tshir/Rr45+
Shhtm1Chg/Shh+ 		involves: 129S1/Sv * 129X1/SvJ * C57BL/6 * CBA/JNCrlj MGI:6144003


Genotype
MGI:6144003
cx1
Allelic
Composition		 Rr45tm1.1Tshir/Rr45+
Shhtm1Chg/Shh+
Genetic
Background		 involves: 129S1/Sv * 129X1/SvJ * C57BL/6 * CBA/JNCrlj
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rr45tm1.1Tshir mutation (2 available); any Rr45 mutation (2 available)
Shhtm1Chg mutation (2 available); any Shh mutation (48 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
skeleton

respiratory system

digestive/alimentary system

growth/size/body
epiglottis hypoplasia ( J:148018 )




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
01/28/2026
MGI 6.24 		The Jackson Laboratory