Figure 4.—

UNC-51 and BEC-1 are required for male tail development. (A) Tail structure of wild-type adult male. (B) Tail phenotype of an unc-51(e369) male. In this animal the rays are completely missing. (C) pbec-1∷BEC-1∷GFP is expressed in wild-type male. Corresponding fluorescence (top) and Nomarski (bottom) images. (D) Male tail structure in a bec-1(ok691); Ex[pbec-1∷BEC-1∷GFP] adult. Arrowheads indicate the rays on one side. bec-1 mutants with affected tail always lost GFP expression in the tail.