Reduces variegated mutant effect (sometimes completely) of w, rst, fa, spl, nd, and dm in Dp(1;3)N264-58. Also reduces w variegation of In(1)wm4, rst variegation of In(1)rst3 and sc variegation of In(1)sc8. Enhances sc variegation of In(1)sc4 and y variegation of In(1)y3P. Semidominant; heterozygote less suppressed than homozygote. Shows maternal effect; Su(var)/+ offspring of Su(var)/Su(var) more nearly normal than Su(var)/+ offspring of Su(var)/+ mothers. Homozygote fertility slightly reduced. Viability excellent. RK2. homozygous viable
J.B. Spofford.