释义 |
DictionarySeeadditiveadditive gene action
additive gene action[¦ad·ə·div ¦jēn ‚ak·shən] (genetics) A form of allelic interaction in which dominance is absent, resulting in a heterozygote that is intermediate in phenotype between homozygotes for the alternative alleles. The cumulative contribution made by all loci in a group of nonallelic genes to a polygenic trait. |