An 8.5kB BamHI/HpaI genomic fragment including the entire Act57B ORF, about 5kb of 3' sequence and a shorter piece of 5' sequence.
Act57B+tBH prevents prepupal lethality in Act57Bex8/Df(2R)E2 animals; position of restriction fragment on reference sequence inferred by FlyBase curator.
Act57B+tBH partially rescues Df(2R)E2/Act57Bex8
Act57B+tBH prevents prepupal lethality in Act57Bex8/Df(2R)E2 animals. The majority of these animals die as pharate adults, and all escaper adults lack a clypeus.