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Glossary Term
Glossary Term Epistasis
Definition Masking of a phenotypic trait through the action of a mutant allele. For example, albinism (absence of pigment) is epistatic to coat color genes that determine black vs. brown fur.

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 6.19
The Jackson Laboratory