A roX1 cDNA with the RB3 domain deleted is cloned downstream of Hsp83 promoter sequences.
lncRNA:roX1-RB3.Hsp83 partially rescues Df(1)52/lncRNA:roX1MB710
The presence of roX1ΔRB3.Hsp83 partially rescues roX1MB710 Df(1)52 male viability to 47% of wild-type levels.