Answer:
Dynein walking occurs when the cytoplasmic dynein moves along the microtubule processively. Its other stock is attached to the microtubule and is always attached. This causes for the dynein to "walk" a reasonable distance along the microtubule without detaching.
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When the plant cell lengthen is called elongation
Location of energy sources
Analogous structures? The wings of those species evolved to serve the same purpose, but the species themselves do not share a common ancestor.