<P> A polar body is a small haploid cell that is formed concomitantly as an egg cell during oogenesis, but which generally does not have the ability to be fertilized . When certain diploid cells in animals undergo cytokinesis after meiosis to produce egg cells, they sometimes divide unevenly . Most of the cytoplasm is segregated into one daughter cell, which becomes the egg or ovum, while the smaller polar bodies only get a small amount of cytoplasm . They frequently die (apoptosis) and disappear, but in some cases they remain and can be important in the life cycle of the organism . </P> <P> Polar body twinning is a hypothesized form of twinning in meiosis, where one or more polar bodies do not disintegrate and are fertilized by sperm . </P>

Polar bodies are produced during the formation of