Assertion: ovary's oocyte | /r/CapableOf | start the process of meiosis
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text: The process of oogenesis begins while the female is still an embryo undergoing development: the oocytes start the process of meiosis and then pause during meiotic prophase I. Because this process occurs during embryonic development, this means that a female mammal is born with every single egg she will be able produce during her lifetime already present (in an immature form) in her ovaries.