Polytene chromosomes normal.
Shows lethality from the first larval instar to the pupal stage when heterozygous with the MBT chromosome.
Weak neurogenic phenotype.
Df(3R)mbtP, groE75 has lethal | pupal stage phenotype
groE75, srn88 has lethal | larval stage phenotype
Can be rescued by a grounspecified transgene.
Fails to complement the MBT chromosome for viability.
Preiss.