AP BIOLOGY

Detailed explanation-1: -Metaphase. Next, chromosomes assume their most compacted state during metaphase, when the centromeres of all the cell’s chromosomes line up at the equator of the spindle. Metaphase is particularly useful in cytogenetics, because chromosomes can be most easily visualized at this stage.

Detailed explanation-2: -The sister chromatids line up at the equator, or center, of the cell. This is also known as the metaphase plate. The spindle fibers ensure that sister chromatid s will separ ate and go to different daughter cells when the cell divides.

Detailed explanation-3: -During metaphase, the kinetochore microtubules pull the sister chromatids back and forth until they align along the equator of the cell, called the equatorial plane.

Detailed explanation-4: -Metaphase. 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.

Detailed explanation-5: -The equatorial position of the metaphase plate ensures symmetric cell divisions.