Fig. 1.

Schematic of GAL4 insertion and larval body plan. (A) MiMIC or CRIMIC cassettes were inserted into a common intron or 5′UTR to capture the expression of all isoforms for each Dpr and DIP gene. MiMIC insertions were flanked by two attP sites which are later swapped by a GAL4 exon or T2A-GAL4 trojan exon. (B) Drosophila larvae are divided into three thoracic segments and nine abdominal segments, with repeated muscles, MNs and SNs. Muscles are divided into three main groups, the ventral, lateral and dorsal muscles. MNs innervating these muscles are not shown in this diagram. SNs are divided into six main classes: the es neurons, ch neurons, bd neurons, td neurons, md neuron and da neurons (Orgogozo and Grueber, 2005). In addition, da neurons are further divided into da-I, da-II, da-III and da-IV subclasses.