Imprecise excision of the insertion in Dscam05518, resulting in a deletion of sequences in the Dscam exon 4 cluster (the entire exon 4 cluster of exons 4.1 to 4.12 is lost).
abnormal neuroanatomy | somatic clone
lethal | recessive
neuron & mushroom body | somatic clone
Single cell clones of mushroom body α/β neurons that are homozygous for DscamC15-1 show axon branching defects, such as the generation of additional branches and failure to fully extend branches.