What is the primary difference in microtubule dynamics between metaphase and ana

Question

What is the primary difference in microtubule dynamics between metaphase and anaphase? Subunits are added to microtubule plus ends during metaphase and lost from them during anaphase. Subunits are added to microtubule plus ends during anaphase and lost from them during metaphase. Subunits are added to microtubule plus ends during metaphase, while microtubules disassemble from both ends during anaphase. Subunits are added to microtubule plus ends during anaphase, while microtubules disassemble from both ends during metaphase.

Explanation / Answer

Answer= The primary difference in microtubule dynamics between metaphase & anaphase is

Subunits are added to microtubule plus ends during metaphase & lost from them during anaphase

Explaination = Subunits are added to plus ends of microtubule during metaphase keeping the length of the chromosomal fibres constant

whereas subunits are lost from + ends during the anaphase resulting in shortnening of the chromosomal fibres

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