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Phenotypes Associated with This Genotype
Genotype
MGI:5013562
Allelic
Composition
Hormad1tm1.2Atot/Hormad1tm1.2Atot
Genetic
Background
involves: 129/Sv * BALB/c * C57BL/6 * SJL
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Hormad1tm1.2Atot mutation (0 available); any Hormad1 mutation (31 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
reproductive system
N
• oocyte numbers are normal
• male mice lack post-meiotic cells
• oocytes contain fewer chiasmata than wild-type cells
• in female germ cells, autosomal synaptonemal-complex formation is never completed unlike in wild-type cells
• pseudo-sex-body-like formation is impaired compared to in wild-type cells
• oocytes contain fewer chiasmata than in wild-type cells
• however, oocytes exhibit normal nuclear envelop breakdown
• chromosomes fail to align along abnormally long meiosis I spindle unlike in wild-type cells
• in male germ cells, autosomal synaptonemal-complex formation is never completed unlike in wild-type cells
• sex-body formation is impaired compared to in wild-type cells
• autosomal synaptonemal-complex formation in spermatocytes and oocytes is never completed unlike in wild-type cells
• spermatocytes are eliminated at a stage equivalent to mid-pachytene unlike in wild-type mice
• spermatocytes are eliminated in stage-IV tubules unlike in wild-type mice
• spermatocytes are eliminated at a stage equivalent to mid-pachytene unlike in wild-type mice
• spermatocytes are eliminated in stage-IV tubules unlike in wild-type mice

cellular
• male mice lack post-meiotic cells
• oocytes contain fewer chiasmata than wild-type cells
• in female germ cells, autosomal synaptonemal-complex formation is never completed unlike in wild-type cells
• pseudo-sex-body-like formation is impaired compared to in wild-type cells
• oocytes contain fewer chiasmata than in wild-type cells
• however, oocytes exhibit normal nuclear envelop breakdown
• chromosomes fail to align along abnormally long meiosis I spindle unlike in wild-type cells
• in male germ cells, autosomal synaptonemal-complex formation is never completed unlike in wild-type cells
• sex-body formation is impaired compared to in wild-type cells
• autosomal synaptonemal-complex formation in spermatocytes and oocytes is never completed unlike in wild-type cells
• spermatocytes are eliminated at a stage equivalent to mid-pachytene unlike in wild-type mice
• spermatocytes are eliminated in stage-IV tubules unlike in wild-type mice
• spermatocytes and oocytes exhibit reduced steady-state numbers of single-stranded double-strand break repair (DSB) ends compared to wild-type cells

homeostasis/metabolism
• spermatocytes and oocytes exhibit reduced steady-state numbers of single-stranded double-strand break repair (DSB) ends compared to wild-type cells


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
04/30/2024
MGI 6.23
The Jackson Laboratory