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Phenotypes Associated with This Genotype
Genotype
MGI:5795958
Allelic
Composition
\Mirc20tm1.1Blel/\Mirc20tm1.1Blel
Genetic
Background
involves: 129S4/SvJae * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Mirc20tm1.1Blel mutation (0 available); any Mirc20 mutation (1 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• fewer than expected mice are present between E15.5 and E17.5 with no mice detected at E18.5

nervous system
• in the neuroepithelium at E9.5 but not E8.5
• increased cellular numbers in the hindbrain
• increased thickness in the mid- and forebrain
• at E9.5, mice exhibit large open anterior neural tube encompassing the mid and hindbrain with some extension into the forebrain region
• mice exhibit a failure of the dorsolateral hinge formation and neural tube closure with collapse of the neural fold by E10.5
• severe
• however, anterior-posterior patterning is normal
• in hindbrains at E13.5

embryo
• abnormal embryo at E9.5
• however, mice are normal at E7.5
• increased cellular numbers in the hindbrain
• increased thickness in the mid- and forebrain
• at E9.5, mice exhibit large open anterior neural tube encompassing the mid and hindbrain with some extension into the forebrain region
• mice exhibit a failure of the dorsolateral hinge formation and neural tube closure with collapse of the neural fold by E10.5

cellular
• in the neuroepithelium at E9.5 but not E8.5


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
03/25/2025
MGI 6.24
The Jackson Laboratory