Ans. If mitosis goes wrong, it can result in genetic abnormalities that can lead to diseases such as cancer. Errors can occur during any of the four stages of mitosis, such as chromosomal instability, defects in spindle formation, or failure of cytokinesis. These errors can lead to the formation of cells with abnormal numbers of chromosomes or incomplete sets of chromosomes, which can cause cell death or uncontrolled cell growth. In some cases, these abnormal cells can develop into tumors and invade nearby tissues.