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Phenotypes Associated with This Genotype
Genotype
MGI:3694128
Allelic
Composition		 Or8a1tm1Mom/Or8a1+
Or8a1btm1(Or8a1)Mom/Or8a1b+
Genetic
Background		 involves: 129P2/OlaHsd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Or8a1btm1(Or8a1)Mom mutation (3 available); any Or8a1b mutation (35 available)
Or8a1tm1Mom mutation (1 available); any Or8a1 mutation (69 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
nervous system
abnormal olfactory bulb morphology ( J:90716 )
• Hyb A axons co-converge with Olfr160tm6Mom axons onto the same glomeruli, but axons segregate into separate compartments within the glomeruli

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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Funding Information
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Send questions and comments to User Support. 		last database update
01/13/2026
MGI 6.24 		The Jackson Laboratory