Do mistakes occur in mitosis?

Mitosis is the machanics where genetic simularity of cells is assured. But, to answer the question in the title,yes,although rare,mitotic mistakes do occur. If one or more chromosomes did not attach themselves to the spindle for some reason,such as a loss of the centromere, it could lag behind while dividing and end up in the wrong daughter cell. The centrioles might divide abnormally. Thus, producing abnormal division centers. As a result of these mistakes, the daughter cells would contain unequal numbers of chromosomes that could lead to death or to abnormal patterns of cellular behavior. The mechanics by which genetic character becomes differenciated remains one of the most intriguing of biological mysteries .

So, the whole furtilization process just gets all of this started. Isn't it interesting how the whole of the process of life,not just in humans but also in animals,plants, anything living has a self distruct mechanism,if you will,in most cases to stop the process at any time by aborting the whole thing if need be! There is a rhyme of reason in all nature.