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Phenotypes Associated with This Genotype
Genotype
MGI:3789967
Allelic
Composition		 In(4)28Rk/+
Genetic
Background		 involves: M. m. domesticus poschiavinus
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
In(4)28Rk mutation (1 available); any In(4)28Rk mutation (1 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
reproductive system
abnormal male meiosis ( J:23389 )
• male heterozygotes have an anaphase bridge frequency of approximately 56%

cellular
abnormal male meiosis ( J:23389 )
• male heterozygotes have an anaphase bridge frequency of approximately 56%

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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Funding Information
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Send questions and comments to User Support. 		last database update
03/31/2026
MGI 6.24 		The Jackson Laboratory