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Phenotypes Associated with This Genotype
Genotype
MGI:3043227
Allelic
Composition		 Hey1tm1Gess/Hey1+
Hey2tm1Gess/Hey2tm1Gess
Genetic
Background		 involves: 129 * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Hey1tm1Gess mutation (0 available); any Hey1 mutation (19 available)
Hey2tm1Gess mutation (0 available); any Hey2 mutation (29 available)
♀ phenotype observed in females
♂ phenotype observed in males
N normal phenotype
mortality/aging
premature death ( J:89444 )
• by P21 - P28 far fewer mutants are found than expected
• adult mutants also display additional adult lethality from an unknown caus

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
01/06/2026
MGI 6.24 		The Jackson Laboratory