Pipe cleaners for the chromosomes.
Pieces of plastic string for the spindle fibers.
And little styrofoam balls for the nucleus.
Here the chromatin is turning into chromosomes and centromeres have duplicated.
In prophase the nucleus disappears, duplicated chromosomes are visible and the spindle is in process of forming.
In metaphase centomeres of duplicated chromosome align at the center of the fully formed spindle.
In anaphase the sister chromatids part and become daughter chromosomes moving toward the spindle poles.
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