An observation that would allow for identification of the cell as an animal cell rather than a plant cell would be the nucleoli disappearing.
Explanation:
Mitosis is first phase where parent cell is divided into two identical daughter cells. It is the primary organism where organism generates new cells through cell division. It is a duplication of its parent cell. Here parent cell passes genetic material to its daughter cell. It is the first stage of cell division.
The main purpose is replacing a worn out new cell. In mitosis, chromosome becomes highly compact. It can be seen through microscope in both plant and animal cell
