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Phenotypes Associated with This Genotype
Genotype
MGI:5523548
Allelic
Composition
Spo11tm1Bdm/Spo11tm1Bdm
Genetic
Background
involves: 129
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Spo11tm1Bdm mutation (0 available); any Spo11 mutation (21 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
reproductive system
• leptotene and zygotene nuclei display a global absence of double strand break formation and repair
• a pseudo XY body is present in spermatocytes
• spermatocytes and oocytes reach a zygotene-like stage with variable degrees of heterologous synapsis
• blocked at a zygotene-like stage
• blocked at a zygotene-like stage

homeostasis/metabolism
• radiation induced double strand breaks elicit a meiotic silencing of unsynapsed chromatin (MSUC) in spermatocytes

cellular
• leptotene and zygotene nuclei display a global absence of double strand break formation and repair
• a pseudo XY body is present in spermatocytes
• spermatocytes and oocytes reach a zygotene-like stage with variable degrees of heterologous synapsis
• blocked at a zygotene-like stage
• radiation induced double strand breaks elicit a meiotic silencing of unsynapsed chromatin (MSUC) in spermatocytes


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