About   Help   FAQ
Glossary Term
Glossary Term Recessive
Definition One of a series of terms applied to the phenotypic effect of a particular allele in reference to another allele (usually the standard wild-type allele) with respect to a given trait. An allele "a" is said to be recessive with respect to the allele "A" if the A/A homozygote and the A/a heterozygote are phenotypically identical and different from the a/a homozygote. An example is the nonagouti (a) allele of the mouse. A(+)/A(+) and (+)/a mice have identical agouti banding of individual hairs in the coat, while a/a mice have hairs of uniform color.
See also:

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 & Copyright Notice
Send questions and comments to User Support.
last database update
MGI 6.17
The Jackson Laboratory