Polytene chromosomes normal.
Breaks between coordinates +21 and +23 kb, within the ss transcription unit.
Reported to map between +21 and +23 in the coordinate system of FBrf0102306. The breakpoint appears to fall within a HindIII-EcoRI fragment on the Figure 1 map.
Null phenotype. Antennal transformations, reduction in bristle size and tarsal deletions.