lethal | recessive
lethal - all die before end of pupal stage | recessive
some die during pupal stage | recessive
maxillary palp bristle
maxillary palpus & macrochaeta
wing
Pupae die with completely formed imaginal organs. Some escapers have faded wings and reduced bristle number on palpus.
Heterozygotes with alleles of br or 'rbp' have reduced number of bristles on the palpus and have short, broad wings. Heterozygotes with Df(1)br25 have reduced viability and br wings.
Stated to be lost.