During certain stages of their life cycle, some cells repeatedly undergo mitosis but do not undergo cytokinesis. What would you expect to see if you looked at such cells, or a tissue made up of such cells, under a microscope? Explain your answer.
If cells do not undergo cytokinesis, the cytoplasm and organelles in the cytoplasm would not divide. Cytokinesis is the process of dividing the cytoplasm into two daughter cells. The centrosomes, mitochondria, and Golgi complex divide and, along with the other components of the cell, are evenly distributed into the newly formed cells. So, if cells do not undergo cytokinesis, nothing of that would happen.
Under microscopic examination, a tissue whose cells complete all parts of the cell cycle except cytokinesis would appear to be made up of a mass of cytoplasm with many nuclei scattered in it.