A 3.3kb EcoRI fragment containing the lncRNA:roX1 cDNA tagged with the tra2 polyadenylation signal and driven by the Hsp83 promoter.
roX1ex6 Df(1)52/Y males carrying P{w+4Δ4.3} generally do not survive to adulthood. This lethality is substantially rescued by an autosomal copy of roX1Hsp83.PM.