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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID 		Rr308tm1Fwa
targeted mutation 1, Frederick W Alt
MGI:2654435
Summary 1 genotype
Jump to Allelic Composition Genetic Background Genotype ID
hm1
 		Rr308tm1Fwa/Rr308tm1Fwa involves: 129P2/OlaHsd MGI:3722283


Genotype
MGI:3722283
hm1
Allelic
Composition		 Rr308tm1Fwa/Rr308tm1Fwa
Genetic
Background		 involves: 129P2/OlaHsd
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
immune system
abnormal T cell differentiation ( J:82616 )
• thymocyte development is halted at the double positive stage
abnormal T cell receptor alpha chain V-J recombination ( J:82616 )
• block in V alpha/J alpha50 recombination

hematopoietic system
abnormal T cell differentiation ( J:82616 )
• thymocyte development is halted at the double positive stage
abnormal T cell receptor alpha chain V-J recombination ( J:82616 )
• block in V alpha/J alpha50 recombination




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