1. One mature ovum (egg cell): This is the only functional product of oogenesis. It is a large, haploid cell containing half the genetic material of the mother.
2. Three polar bodies: These are small, non-functional cells that are eventually degraded. They are formed during the meiotic divisions of oogenesis and serve to discard excess genetic material, ensuring that the mature ovum receives the majority of the cytoplasm and organelles.
Therefore, the ultimate outcome of oogenesis is one mature egg cell and three polar bodies.