Question

what doesnt occur during mitosis

Answer 1

it should be does not occur.

Answer 2

It is not possible to answer which of the following occur during mitoses except what, because you have not given options. However, from information gathered, the most likely answer is the replication of DNA. This is because the replication of DNA only takes place while on the S phase.

Answer 3

Its a better question to ask what does occur. What does occur is this: Prophase, prometaphase, metaphase, anaphase, telophase.
prophase: chromosomes condense and become visible; mitotic spindle starts to form
prometaphase: nuclear envelope dissolves; spindle fibers attach to kinetochores
metaphase: chromosomes line up at the equator of the cell
anaphase: chromatids are pulled apart
telophase: new nuclear envelops form

In cytokinesis the cell begins to pinch in two
for even more help go here:
http://www.youtube.com/watch?v=HYKesI9jL8c
It helped me a lot c: