Why do the chromosomes line up in the middle of the cell

QUESTION:

Why do the chromosomes line up in the middle of the cell?

ANSWER:

Chromosomes line up at the metaphase plate, under tension from the mitotic spindle. The two sister chromatids of each chromosome are captured by microtubules from opposite spindle poles. In metaphase, the spindle has captured all the chromosomes and lined them up at the middle of the cell, ready to divide.

Explanation:

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Chromosomes line up at the metaphase plate, under tension from the mitotic spindle. The two sister chromatids of each chromosome are captured by microtubules from opposite spindle poles. In metaphase, the spindle has captured all the chromosomes and lined them up at the middle of the cell, ready to divide.

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Explanation:

name and explain one of the event that occurs during meiosis that increases the variation in offspring even more than simple reproduction?