18bp in-frame deletion at or very close to the calcium binding site at the start of the cadherin like domain.
In frame deletion that deletes 6 amino acids in Ret (including a conserved tyrosine residue).
RetLM2 homozygous larvae, RetLM2/RetLM1 and RetLM2/RetLM3 transheterozygous larvae hatch normally hatch normally but show a range of feeding defects, as compared to controls: a foraging phenotype in which larvae move away from a central food source; accumulation of food in the oesophagus; reduced/absence of food in the midguts and absence of food in the oesophagus. RetLM1 homozygous larvae are frequently immobile or sluggish in response to touch, as compared to controls.