loss of function allele
hiwND36 expresses a truncated form of the hiw protein due to a premature stop codon approximately 2700 amino acid residues into the protein.
abnormal neuroanatomy (with Df(1)RK2)
abnormal neuroanatomy (with Df(1)RK4)
synapse
Homozygotes or hemizygotes over Df(1)RK2 or Df(1)RK4 all have synapses that are longer and more branched with more numerous but smaller boutons.