In which stage do chromosomes line up along the equator of the cell?

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. There is an important checkpoint in the middle of mitosis, called the metaphase checkpoint, during which the cell ensures that it is ready to divide.

What can happen if cells do not duplicate correctly?

The cell cycle controls the four major phases of cell growth and division. … 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.

What type of cells are made in mitosis?

Mitosis results in two identical daughter cells, whereas meiosis results in four sex cells.

What structures pull chromosomes apart?

The movement of chromosomes is facilitated by a structure called the mitotic spindle, which consists of microtubules and associated proteins. Spindles extend from centrioles on each of the two sides (or poles) of the cell, attach to the chromosomes and align them, and pull the sister chromatids apart.

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What would happen if our cells didn’t go through mitosis correctly?

If there is no mitosis, there would be no cell growth and cell reproduction. Most importantly, genetic information cannot be passed on. All cell functions would be hugely affected.

What would happen if DNA replication stopped?

If DNA replication did not take place fully, or at all, the offspring cells would be missing some or all of the genome. This could be disastrous if a cell was missing genes necessary for its function and health.

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