How many actual ova are created in one meiotic division?

In one meiotic division, a single primary oocyte typically produces one viable ovum (egg) and three polar bodies, which generally degenerate and do not develop into functional eggs. Thus, while four cells are produced in total, only one of them becomes a mature ovum. This process is part of oogenesis, where the unequal distribution of cytoplasm during meiOSis leads to the formation of a single functional egg.