su(Hw)V/su(Hw)2 suppresses the phenotype of y2, y2s14, y2s20 or y2sA3 flies. su(Hw)V/su(Hw)2 partially suppresses the phenotype of yvs1, yvs2, yvs3, yvs4, yvs5, yvs6 or yvs7 flies. su(Hw)V/su(Hw)2 completely suppresses the y+ls3 phenotype.
Completely suppresses y2 and its partial revertants. Dominantly suppresses the enhancing effect of mod(mdg4)ul on y2 : increases pigmentation in the body, wings and bristles of the thorax, leg, abdomen and wing. Completely suppresses the scD1 mutant phenotype.
The female sterility phenotype and the loss of gypsy insulator function (assayed through body, wing and bristle phenotypes induced by mutations in the y, ct and f genes) caused by su(Hw)2 is not complemented by su(Hw)A2663 and partially complemented with either su(Hw)A460 or su(Hw)M393 (both a separation-of-function allele), which restore either the female fertility or the insulator function, respectively.