additive factor

additive factor

[′ad·ə·div ′fak·tər]
(genetics)
Any of a group of nonallelic genes that affect the same phenotypic characteristics.
References in periodicals archive ?
For the last several decades, ecologists have known that heavier stable isotopes become more enriched in a consumer than in the food they eat, and have agreed that they increase by a standard additive factor of 3.
Estuarine Research Laboratory -- tended to have an acidic pH, Rudd says it's possible that sulfates may represent yet another additive factor contributing to the methylmercury problem in regions beset by acid rain.
Are race, gender and sexual orientation additive factors to be treated cumulatively in judging oppression?