complementation

com·ple·men·ta·tion

noun
\ˌkäm-plə-(ˌ)men-ˈtā-shən, -mən-\

Definition of COMPLEMENTATION

1

: the formation of neutral colors from complementary colors

2

: production of normal phenotype in an individual heterozygous for two closely related mutations with one on each homologous chromosome and at a slightly different position