In mitosis why is it important to for the offspring cells to have the same amount of dna as the parent cell

Mitosis is a part of the cell cycle in which chromosomes in a cell nucleus are separated into two identical sets of chromosomes, and each set ends up in its own nucleus.

 It is important that the cells have a copy of every chromosome, so the process involves copying the chromosomes first and then carefully separating the copies to give each new cell a full set.

i believe the answer is Mitosis is important because of its 4 stages in the cell cycle. 1. Prophase 2. Metaphase 3. Anaphase 4. Telophase. In the first stage, Prophase, Chromatin in the nucleus condenses to form chromosomes, thus the nuclear envelope breaks
i hopw this helped

It's cell theory. easy name i would think.