Stable mutation.
su(Hw)u1 is a suppressor of phenotype of Bx2
su(Hw)u1 is a suppressor of phenotype of ct6
su(Hw)u1 is a suppressor of phenotype of ctMR2
su(Hw)u1 is a suppressor of phenotype of ctMRpN1
su(Hw)u1 is a suppressor of phenotype of sc1
su(Hw)u1 is a suppressor of phenotype of y2
Suppresses a number of mutations caused by gypsy element insertion, such as y2, sc1, ct6, ctMR2, ctMRpN1 and Bx2, in transheterozygous combination with su(Hw)2.