Contained within a 10.4kb genomic SalI fragment.
Su(var)3-7+t10.4 is a non-enhancer of suppressor of variegation phenotype of Su(var)3-96
The combination of Su(var)3-96 and either Su(var)3-7+t10.4 or Su(var)205+tSa leads to a Su(var)3-96 like position effect variegation (PEV) phenotype - i.e. suppression of PEV in In(1)wm4.
Rescues the enhancement of variegation of In(1)wm4.