Meaning of oligogene

ol•i•go•gene

Pronunciation: (ol'i-gō-jēn", u-lig'u-), [key]
— n. Genetics.
  1. a gene that produces or significantly affects the expression of a qualitative heritable characteristic, acting either alone or with a few other genes.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.