Recessive embryonic-larval-boundary lethal.
Homozygotes die shortly after hatching as first instar larvae.
Complements the lethality but not the bristle phenotype of Sbsbd-13, Sbsbd-18, Sbsbd-21, Df(3R)sbd26, Sbsbd-32, Sbsbd-35, Sbsbd-43, Df(3R)sbd45, Df(3R)sbd105 and Sbsbd-1.