<prompt> Answer this question truthfullyWhat happens to secondary oocytes during meiosis II and what is required for them to progress beyond metaphase II?  <response>: <reason> Secondary oocytes are arrested in metaphase II of meiosis II until fertilization. Once fertilization occurs, the secondary oocyte completes meiosis II and becomes a mature ovum. If fertilization does not occur, the secondary oocyte will degenerate. 