Homozygous embryos have a disrupted tracheal network, with misdirected tubules and ectopic branching in addition to disruption of the dorsal trunk.
Survives in heterozygous combination with SM1, but behaves as a dominant lethal or displays delayed development in combination with most other second chromosomes tested.
Embryos have completely unpigmented and weak cuticles.
Cuticle defects.
non-complementing (Class II).
Boswell.
Class II Pu allele.
Class II allele.