Supergene

Definition

Mutually advantageous genes clustered together on the same chromosome by selection for this beneficial association. Separation of the genes is so infrequent that they function as if they were a single gene.

Etymology

From Latin 'super-', meaning 'above' or 'beyond', and 'gen', from Greek 'gene', meaning 'origin'.

Example

The supergene controlling wing pattern variation in some butterflies allows for the simultaneous evolution of multiple traits.

Related Terms

• Gene linkage
• Selective advantage