AP BIOLOGY

Detailed explanation-1: -Anaphase. The sister chromatids separate from one another and are pulled towards opposite poles of the cell. The microtubules that are not attached to chromosomes push the two poles of the spindle apart, while the kinetochore microtubules pull the chromosomes towards the poles.

Detailed explanation-2: -During anaphase, the microtubules attached to the kinetochores contract, which pulls the sister chromatids apart and toward opposite poles of the cell (Figure 3c).

Detailed explanation-3: -The spindle fibers are completely formed and are attached to each sister chromatid of the chromosomes. Next, during anaphase, the centromeres holding the sister chromatids together are divided and the sister chromatids are pulled apart by the spindle fibers to opposite poles of the diving cell.

Detailed explanation-4: -Sister chromatids separate from one another in anaphase by releasing all chromosome cohesion. This is different from meiosis I, in which pairs of sister chromatids separate from one another, moving to each spindle pole by releasing cohesion only between sister chromatid arms.

Detailed explanation-5: -Metaphase leads to anaphase, during which each chromosome’s sister chromatids separate and move to opposite poles of the cell. Enzymatic breakdown of cohesin-which linked the sister chromatids together during prophase-causes this separation to occur.