A series of DGN-1 domain deletion mutants (A, left panel) was expressed transgenically in dgn-1(cg121) or wild-type animals under the control of the early neural promoter unc-119p. Transgenic animals were scored for oblique PVC axons (A, right panel), ventralized PLM axons (B), and sterility (C). Average and range (error bars) of two independent extrachromosomal array lines is indicated. N=100–150 axons (A,B) or N=50–75 animals (C) scored for each transgene line in each genetic background.