About   Help   FAQ
Phenotypes Associated with This Genotype
Genotype
MGI:4437227
Allelic
Composition		 Fgf8tm2.1Jyhl/Fgf8tm2.1Jyhl
Genetic
Background		 B6.129S6-Fgf8tm2.1Jyhl
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Fgf8tm2.1Jyhl mutation (0 available); any Fgf8 mutation (25 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
mortality/aging
postnatal lethality, incomplete penetrance ( J:156717 )
• very few were recovered
• Background Sensitivity: lethality is more severe on a C57BL/6J inbred background compared to a CD-1 outbred background

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)
Citing These Resources
Funding Information
Warranty Disclaimer, Privacy Notice, Licensing, & Copyright
Send questions and comments to User Support. 		last database update
01/28/2026
MGI 6.24 		The Jackson Laboratory