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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID 		Spmd4Smt
Smt
MGI:3654138
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
 		Spmd4Smt/Spmd4Smt involves: M. m. molossinus * Smt MGI:3654345
cx2
 		Spmd2Smt/Spmd2Smt
Spmd4Smt/Spmd4Smt 		involves: M. m. molossinus * Smt MGI:3654346


Genotype
MGI:3654345
hm1
Allelic
Composition		 Spmd4Smt/Spmd4Smt
Genetic
Background		 involves: M. m. molossinus * Smt
Find Mice Using the International Mouse Strain Resource (IMSR)
No mouse lines available in IMSR.
See publication links below for author information.
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
reproductive system
abnormal male meiosis ( J:108418 )
• increased meiotic defect

cellular
abnormal male meiosis ( J:108418 )
• increased meiotic defect




Genotype
MGI:3654346
cx2
Allelic
Composition		 Spmd2Smt/Spmd2Smt
Spmd4Smt/Spmd4Smt
Genetic
Background		 involves: M. m. molossinus * Smt
Find Mice Using the International Mouse Strain Resource (IMSR)
No mouse lines available in IMSR.
See publication links below for author information.
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
reproductive system
oligozoospermia ( J:108418 )
• increased germ cell degeneration

cellular
oligozoospermia ( J:108418 )
• increased germ cell degeneration




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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Send questions and comments to User Support. 		last database update
09/30/2025
MGI 6.24 		The Jackson Laboratory