Distal breakpoint affects a genomic fragment containing the 3' end, including the 3' untranslated region, of sens.
Heterozygotes show loss of both anterior and posterior wing margin.
Ectopic cell death is not seen in the wing discs of heterozygous animals.
Wing anterior and posterior margins are missing.
Lateral margins of wings excised, giving narrowed shape; angle between veins L2 and L5 reduced. Bristles shortened and stubby; postscutellars frequently missing. Eyes somewhat deformed with tufted vibrissae. Abdomen dark and narrow with rear edge of tergites raised. Homozygous lethal. sens/Df(3L)M69E is lethal. Modification of wings first visible as marginal scalloping of prepupal wing buds; wing fold narrower (Waddington, 1939; Waddington, 1940). RK1A.
Dubinin, 1929.