The sister chromatids line up at the equator, or center, of the cell. The spindle fibers ensure that sister chromatids will separate and go to different daughter cells when the cell divides. You just studied 15 terms!
Why do chromosomes line up at the equator during metaphase and why is this arrangement important?
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.
Why do the chromosomes line up down the cell?
As the centrioles take their places at opposite sides of the cell, they send out more spindle fibers. These spindle fibers seek out the sister chromatids that are present in the cell. … Metaphase: During metaphase, each of the 46 chromosomes line up along the center of the cell at the metaphase plate.
What can happen if cells do not duplicate correctly?
Answer: If the cell has not properly copied its chromosomes, an enzyme called cyclin dependent kinase, or CDK, will not activate the cyclin, and the cell cycle will not proceed to the next phase. The cell will undergo cell death.
What is it called when chromosomes appear?
prophase. a cell division begins, the chromatin threads coil and shorten so that visible bar like bodies (chromosomes) appear.