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Glossary Term
Glossary Term Complementation
Definition The appearance of a wild-type phenotype in an individual that is the hybrid offspring of two mutant individuals homozygous for recessive mutations. Complementation shows that the two parental mutant individuals have mutant alleles of different genes, even if they are phenotypically similar. For example, a cross between two light gray mice(ash/ash and d/d) would produce a black mouse.

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 6.20
The Jackson Laboratory