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Phenotypes Associated with This Genotype
Genotype
MGI:5307913
Allelic
Composition
Barx1tm1Shiv/Barx1tm1Shiv
Genetic
Background
either: B6.Cg-Barx1tm1Shiv or 129S.Cg-Barx1tm1Shiv or (involves: CD-1)
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Barx1tm1Shiv mutation (0 available); any Barx1 mutation (7 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• Background Sensitivity: unlike mice on a mixed background with 129 that die at E13, mice on a variety of congenic backgrounds or a mixed background with CD-1 die shortly after birth due to cleft palate

craniofacial
• at E15.5, epithelium and mesenchyme cell proliferation in molars is increased compared to in wild-type mice
• molars exhibit temporal tooth development arrest at a bud stage with a gradual decrease in epithelium and mesenchyme cell proliferation between E13.5 and E14.5 compared to in wild-type mice
• however, molar development is normal by E16.5

digestive/alimentary system

cellular
• in the epithelium and mesenchyme cells of molars between E13.5 and E14.5
• in the epithelium and mesenchyme cells of molars between E15.5

growth/size/body
• at E15.5, epithelium and mesenchyme cell proliferation in molars is increased compared to in wild-type mice
• molars exhibit temporal tooth development arrest at a bud stage with a gradual decrease in epithelium and mesenchyme cell proliferation between E13.5 and E14.5 compared to in wild-type mice
• however, molar development is normal by E16.5

skeleton
• at E15.5, epithelium and mesenchyme cell proliferation in molars is increased compared to in wild-type mice
• molars exhibit temporal tooth development arrest at a bud stage with a gradual decrease in epithelium and mesenchyme cell proliferation between E13.5 and E14.5 compared to in wild-type mice
• however, molar development is normal by E16.5


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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last database update
05/19/2026
MGI 6.24
The Jackson Laboratory