Necessary and sufficient for resistance to insecticides DDT and imidacloprid. May be involved in the metabolism of insect hormones. Expressed throughout development, low levels in embryos and first and second instar larvae, levels increase from third instar through to adult. 91-R, Hikone-R, WC2 and Wisconsin are insecticide resistant strains, 91-C, Canton-S and Oregon-RC are insecticide susceptible. Cyp6g1 is more highly expressed in the resistant strains. Belongs to the cytochrome P450 family.