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Phenotypes Associated with This Genotype
Genotype
MGI:3776431
Allelic
Composition		 Dll1tm1Gos/Dll1+
Jag2tm1Grid/Jag2+
Genetic
Background		 involves: 129S1/Sv * 129S1/SvImJ * 129X1/SvJ * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Dll1tm1Gos mutation (2 available); any Dll1 mutation (46 available)
Jag2tm1Grid mutation (1 available); any Jag2 mutation (47 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
hearing/vestibular/ear
increased cochlear inner hair cell number ( J:132241 )
• cochlea possess increased inner hair cells but not as many as in Jag2tm1Grid homozygotes

nervous system
increased cochlear inner hair cell number ( J:132241 )
• cochlea possess increased inner hair cells but not as many as in Jag2tm1Grid homozygotes

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
01/13/2026
MGI 6.24 		The Jackson Laboratory