When does a secondary oocyte become an ootid?
1) During the follicular phase of the menstrual cycle, just prior to ovulation.
2) After fertilization, but before the egg and sperm nuclear membranes fuse.
3) In utero, where the secondary oocyte will remain frozen in metaphase II until puberty.
4) During the luteal phase of the menstrual cycle, after ovulation but before fertilization.
