Construct: 1.8kb genomic fragment containing part of the fs(1)Yb and CG2701 transcription units.
fs(1)Ybt1.8 fails to rescue fs(1)Yb1
P{fs(1)Ybt1.8} does not rescue fs(1)Ya2.
P{fs(1)Ybt1.8} does not rescue fs(1)Ya2.