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Phenotypes Associated with This Genotype
Genotype
MGI:3663264
Allelic
Composition
T/T+
Genetic
Background
Not Specified
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
T mutation (22 available); any T mutation (62 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
limbs/digits/tail
• the size of the ventral ectodermal ridge of the tail (VER) is reduced to 74% of normal size
• caudal vertebrae numbers range from 10 to 24, with an average of 21
• tail is reduced by about 1/3 in most mutants (J:15081)
• seen by E11 (J:13018)

embryo
• neural tube is abnormal/misshapen in the ventral part and in cases in which the notochord is abnormal
• contain a notochord, however it can be retained in the roof of the gut or cloaca for varying distances and for a limited period, it may be slow to separate from the overlying neural plate or neural tube, or it may secondarily become incorporated completely into the neural tube or the tail-gut (J:15081)
• the notocord has a central lumen in places (J:15081)
• commonly see branching of the notochord proper; at E10-12.5, branches occur mainly in the region of the cloaca and the proximal parts of the tail (J:15081)
• the size of the ventral ectodermal ridge of the tail (VER) is reduced to 74% of normal size

skeleton
• caudal vertebrae numbers range from 10 to 24, with an average of 21

nervous system
• neural tube is abnormal/misshapen in the ventral part and in cases in which the notochord is abnormal


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
03/31/2026
MGI 6.24
The Jackson Laboratory