Shows lethality from the first larval instar to the pupal stage when heterozygous with the MBT chromosome.
Extreme embryonic neurogenic phenotype.
cold-sensitive
btxP, neur3 has lethal | pupal stage phenotype
mer-on-314, neur3 has lethal | larval stage phenotype
Df(3R)mbtP, neur3 has lethal | pupal stage phenotype
Nusslein-Volhard, Wieschaus.