If the band of semaphorins between the outer leg and inner leg of a developing grasshopper is removed experimentally before early sensory pioneer neurons send their axons to their targets, what will happen to the migration of the sensory neurons?

Question

Quizplus · Accepted Answer

Semaphorins act as guidance cues for neuronal migration, and removal of the semaphorin band between the outer leg and inner leg of a developing grasshopper will likely disrupt the migration of sensory neurons to their target, the abdominal ganglion. Thus, the sensory neurons will not reach the abdominal ganglion. Option A and B are also possible outcomes of disrupted semaphorin signaling, but none of the options are as specific to this scenario as option C. Option D is unlikely as sensory neurons are known to migrate during development.

If the Band of Semaphorins Between the Outer Leg and Inner