The cells which are not dividing in the diagram each contain 10 chromosomes.

One of these cells divides by mitosis to produce two new cells.

How many chromosomes will each new cell contain after mitosis?

Mitosis is a type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth. Before mitosis begins, the cell replicates its DNA, so each of the 10 chromosomes consists of two identical sister chromatids. During mitosis, these sister chromatids are separated, and one goes to each new daughter cell. This ensures that each new cell is genetically identical to the parent cell and has the exact same number of chromosomes. Therefore, if the parent cell has 10 chromosomes, each daughter cell will also have 10 chromosomes.