Polar microtubules are short and unstable and extend out from the centrosome toward the cell's periphery.

Name: Polar microtubules are short and unstable and extend out from the centrosome toward the cell's periphery.
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Polar microtubules are long and stable, extending from each spindle pole and overlapping in the middle of the cell, but they do not attach to chromosomes. They play a role in separating the two poles and in the elongation of the cell during mitosis.

Polar Microtubules Are Short and Unstable and Extend Out from the Centrosome