Which of the following traits is NOT seen upon close examination of a living growth cone of an elongating axon?
A)a broad, flattened lamellipodium that creeps out over the substratum
B)stiffmicrospikes pointing outward to the edge of the lamellipodium
C)many cilia that attach to the substratum and pull the growth cone forward
D)highly elongated filopodia that extend and retract continuously
E)none of these choices is observed

Question

Quizplus · Accepted Answer

Cilia are not typically seen in growth cones. The other choices are all features commonly observed in growth cones. A broad, flattened lamellipodium and highly elongated filopodia are key structures for exploring the environment and identifying cues to direct axon growth, while stiff microspikes help to stabilize the growth cone's leading edge.

Which of the Following Traits Is NOT Seen Upon Close