Card 0 of 4
What is a key difference between spermatogenesis and oogenesis?
During spermatogenesis, one spermatogonia will become 4 separate functioning spermatozoa. In oogenesis, a primary oocyte will become 1 functioning ovum (or egg) while 3 polar bodies are also produced, which are nonfunctioning and never become eggs.
Compare your answer with the correct one above
When a female ovulates, in what phase of division is the oocyte?
When a female ovulates, the oocyte is in metaphase II, until it becomes fertilized by a sperm. It then completes the second phase of meiosis to make a mature ovum. Remember that, unlike spermatogenesis, oogenesis begins during development. All oocytes undergo meiosis I during fetal development, and are kept suspended in prophase II until ovulation, when they shift to metaphase II. Meiosis only continues beyond metapahse II if fertilization occurs.
Compare your answer with the correct one above
How long does spermatogenesis take in adult humans?
Spermatogenesis takes approximately 64 days in adult humans. Males begin producing sperm at puberty, and continue until death.
Compare your answer with the correct one above
What is the "Dictyate state?"
Oogenisis halts in the female embryo while the oocytes are trapped in meiosis II. At the beginning of the menstrual cycle a number of oocytes in primordial follicles are stimulated by pituitary gonadotropins to continue maturation.
Compare your answer with the correct one above