Fig 6. Common posterior gonad arm phenotypes of the GnT1/Mgat1 triple null mutant.

(A-C) Diagram iv errors of Fig 2are of various trajectories in ngat-1 and the GnT1 triple mutants following normal phase 1 navigation, three of which are shown here by D.I.C. microscopy. In these, following a normal phase 1, the posterior DTC changes direction often and seemingly randomly, but rarely away from mid-body, although the distal arm in these cases does not return to the mid-body region. Panel C shows a posterior gonad arm like that of diagram ii. The return toward mid-body on the ventral side is usually shorter in the GnT1 triple compared to the ngat-1(ev821) mutant. Premature phase 1 ventral-to-dorsal migrations were observed for 7 anterior DTCs of 130 GnT1 triple mutant animals examined. Scale bar in panel A (for A-C) is 50 μm.