Q. In the cells of some organisms, mitosis occurs without cytokinesis, this will result in?
A. If cytokinesis does not occur after nuclear division (karyokinesis) then it will result in a multinucleated cell with more than one nuclei. Mitosis results in the formation of two identical cells with the same number of chromosomes, after karyokinesis and cytokinesis. So in the absence of cytokinesis, the daughter cell will contain two nuclei.
Mitosis (a phase in the cell cycle) occurs after the DNA in a cell has been duplicated, meaning there are 2 sets of chromosomes in one cell. At the time mitosis, these two sets of chormosomes are isoloated and two identical nuclei are formed within the cell.
Usually, cytokinesis is the last phase in mitosis in which the contents of the cell (cytoplasm and nuclei) are divided over two different, identical daughter cells. The result of mitosis without cytokinesis will be a cell with more than one nucleus.
Such type cell is called a multinucleated cell. This can be a normal process. For example, humans have certain multinucleated bone cells (osteoclasts) that are formed this way. Mitosis without cytokinesis is also observed in the early development of certain insects such as the fruit fly (Drosophila). It can also be a sign of a disturbed cell cycle, which is a pathological process sometimes seen in tumors.