单词	polygene
释义	polygene /ˈpɒlɪdʒiːn / noun Genetics A gene whose individual effect on a phenotype is too small to be observed, but which can act together with others to produce observable variation.Dormancy is a genetically complex trait controlled by polygenes with effects modified by the genetic background and environmental factors.... Traditional quantitative genetic theory proposes that genetic variation in a quantitative trait is due to polygenes each with a small effect on the phenotype and being sensitive to the environment. The effects of polygenes on the ability to map oligogenes have been documented and taken into account in algorithms used for commonly used genetic crosses. Origin 1940s: back-formation from polygenic.
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