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Glossary Term
Glossary Term Transition
Definition A type of point mutation in which a purine is substituted for another purine or a pyrimidine for another pyrimidine. These substitutions include A for G, G for A, C for T, or T for C.
See also Transversion.

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