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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
tw73
t, wild 73
MGI:1856571
Summary 4 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
tw73/tw73 involves: M. m. musculus MGI:5288479
ht2
tw73/twPas1 involves: M. m. brevirostris * M. m. musculus MGI:4820970
cx3
tw73 +/t+ Del(17D17Jcs40-D17Mit198)7Jcs involves: 129S4/SvJae * C3HeB/FeJ * C57BL/6J MGI:5428468
cx4
T/tw73 involves: M. m. musculus MGI:5288480


Genotype
MGI:5288479
hm1
Allelic
Composition
tw73/tw73
Genetic
Background
involves: M. m. musculus
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
tw73 mutation (0 available); any t mutation (19 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• embryos develop only to the two-layered egg cylinder stage, dying within 5 days after implantation

embryo
• post-implantation growth of the embryo is markedly reduced
• the expected association of trophectoderm with the uterine decidua fails to form
• an abnormal trophectoderm does not inhibit embryonic growth to the two-layered egg cylinder stage
• growth abnormalities seen in the embryo can be attributed to a defective trophectoderm
• the expected association of ectoplacental cone with the uterine decidua does not occur

cellular
• post-implantation growth of the embryo is markedly reduced




Genotype
MGI:4820970
ht2
Allelic
Composition
tw73/twPas1
Genetic
Background
involves: M. m. brevirostris * M. m. musculus
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
tw73 mutation (0 available); any t mutation (19 available)
twPas1 mutation (0 available); any t mutation (19 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
reproductive system




Genotype
MGI:5428468
cx3
Allelic
Composition
tw73 +/t+ Del(17D17Jcs40-D17Mit198)7Jcs
Genetic
Background
involves: 129S4/SvJae * C3HeB/FeJ * C57BL/6J
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Del(17D17Jcs40-D17Mit198)7Jcs mutation (0 available); any Del(17D17Jcs40-D17Mit198)7Jcs mutation (0 available)
tw73 mutation (0 available); any t mutation (19 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• the deletion in this genotype identifies a locus on haplotype tw73 that causes lethality at birth, tw73lab




Genotype
MGI:5288480
cx4
Allelic
Composition
T/tw73
Genetic
Background
involves: M. m. musculus
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
T mutation (23 available); any T mutation (60 available)
tw73 mutation (0 available); any t mutation (19 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
reproductive system
• males of this genotype transmit tw73 to 88.6 per cent of offspring

limbs/digits/tail
• all mice of this genotype are tailless





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last database update
04/23/2024
MGI 6.23
The Jackson Laboratory