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Phenotypes Associated with This Genotype
Genotype
MGI:3713238
Allelic
Composition		 Efnb1tm1Rha/Efnb1+
Genetic
Background		 involves: 129P2/OlaHsd
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Efnb1tm1Rha mutation (4 available); any Efnb1 mutation (15 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
skeleton
sternebra fusion ( J:110732 )
• fusion occurs in 1 of 7 mice
asymmetric rib joints ( J:110732 )
• in 2 of 7 mice

limbs/digits/tail
preaxial polydactyly ( J:110732 )
• 10% of mice have preaxial polydactyly

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
03/25/2025
MGI 6.24 		The Jackson Laboratory