Precursors of one type of these cells are classified by their appearance as type A dark, type A pale, or type B. That type of these cells is targeted by nonoxynol-9. A method for a “hyperstimulation” technique uses clomiphene citrate to collect a type of these cells which then undergoes the ICSI procedure. One of these cells expresses CatSper channels that mediate (10[1])capacitation. (10[1])A “calcium wave” triggers the acrosomal (10[1])reaction (10[1]-5[1])in one (-5[1])of these cells, (10[1])causing the release of hyaluronidase at the zona pellucida of another type of them. Asymmetric division of one type of these cells forms polar bodies. The (10[1])synaptonemal (10[1])complex forms to allow crossing-over during the division of these cells, one type of which arrests in prophase I. (10[1])For 10 points, meiosis produces what type of cell that includes eggs and sperm? ■END■