Question

Before mitosis can take place, what must occur?

Answer 1

Interphase

Step-by-step explanation:

I'm currently learning about this as well, haha! In my notes, I have:

The cell cycle begins with stage G1, which is a part of interphase.

which should be your answer!

have a lovely day <3

Answer 2

Before mitosis, the chromosomes are copied. They then coil up, and each chromosome looks like a letter X in the nucleus of the cell. The chromosomes now consist of two sister chromatids. Mitosis separates these chromatids, so that each new cell has a copy of every chromosome.