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Glossary Term
Glossary Term Null Mutation
Definition A type of mutation in which the altered gene product lacks the molecular function of the wild-type gene. Synonyms: Amorphic Mutation, Loss-of-function Mutation.
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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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last database update
MGI 6.22
The Jackson Laboratory