When does meiosis occur in females?
I have a biology test soon and I want to know the time in a female's life that she goes through meiosis to produce working eggs. My teacher told us that girls are born with all the eggs they will ever release, so does that mean that meiosis happens when she is in the womb?
- SmegheadLv 78 years agoFavourite answer
I assume you're talking about humans, since you never said. If you are, then the oocytes begin meiosis during fetal development, but remain arrested at prophase I until the egg is released during ovulation, decades later. Meiosis resumes upon ovulation, but doesn't finish completely until after fertilization has occurred.
- Almost MaratheLv 78 years ago
Yes, and pretty early on in embryonic life, too.
In female mammals, meiosis begins immediately after primordial germ cells migrate to the ovary in the embryo. After a girl is born, that's it - no more eggs will form.
But guys just keep on producing sperm all the time!
- 8 years ago