one of a group of nonallelic genes that together control a quantitative characteristic in an organism.
Also called quantitative gene.

1940–45; back formation from polygenic; see poly-, gene, -ic

polygenic [pol-ee-jen-ik] , adjective
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World English Dictionary
polygene (ˈpɒlɪˌdʒiːn)
any of a group of genes that each produce a small quantitative effect on a particular characteristic of the phenotype, such as height

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Medical Dictionary

polygene pol·y·gene (pŏl'ē-jēn')
One of a group of nonallelic genes acting together to produce quantitative variations of a particular character.

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