Here's why:

* Mitosis is a process of cell division that results in two daughter cells that are genetically identical to the parent cell. This is essential for growth, repair, and development in multicellular organisms.

* Eukaryotic cells are complex cells that have a nucleus and other membrane-bound organelles. They are found in animals, plants, fungi, and protists.

* Prokaryotic cells, on the other hand, are simpler cells that lack a nucleus and other membrane-bound organelles. They reproduce through a process called binary fission, which is different from mitosis.

So, while there are many different types of eukaryotic cells, they all have the ability to undergo mitosis.