Rdl 5' flanking sequences present in Rdl+tcosmid6 are fused upstream of an Rdl cDNA containing alternative exons 3a and 6d.
wild-type
Rdl+m14.1 rescues In(3L)Rdl1/Rdl11
Rdl+m14.1 partially rescues Df(3L)29A6/RdlR