Why are daughter cells formed during mitosis with a set of chromosomes equal to the set of chromosomes

Why are daughter cells formed during mitosis with a set of chromosomes equal to the set of chromosomes in the mother’s cell? What is the significance of this in the life of organisms?

The gene set of the mother (initial) cell is copied absolutely precisely during mitosis. This is possible because during this process, the cell forms two parts with an equal number of chromosomes. This contributes, for example, to the fact that in specific parts of the body the cells do not differ from each other and have a common functionality. Because of this, it is mitosis that is the main method for the formation of tissues of organisms of representatives of the animal and plant world.



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