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Phenotypes Associated with This Genotype
Genotype
MGI:3851374
Allelic
Composition
us/us
Genetic
Background
Not Specified
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
us mutation (2 available); any us mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• affected mice die by 5 months of age

growth/size/body
• continued growth differential likely due to kidney abnormalities

skeleton
• Background Sensitivity: seen in all affected mice but severity depends on genetic background
• unilateral and bilateral fusions occur at 12, 13, 14
• Background Sensitivity: may involve the 18th -29th
• fusions at 5, 6
• fusions at 4, 5

reproductive system
• unstimulated and may be displaced from expected location
• a testis may be small or absent
• one or both testis may be retained in the body cavity

endocrine/exocrine glands
• unstimulated and may be displaced from expected location
• a testis may be small or absent
• one or both testis may be retained in the body cavity

renal/urinary system

limbs/digits/tail
• Background Sensitivity: seen in all affected mice but severity depends on genetic background

behavior/neurological
• mild head-tossing noted

integument
• narrower in diameter than normal


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
01/28/2026
MGI 6.24
The Jackson Laboratory