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 capacitation. A “calcium wave” triggers the acrosomal reaction in one of these cells, (-5[1])causing the release of hyaluronidase at the zona pellucida (10[1])of another type of them. Asymmetric division of one type of these cells forms polar bodies. The synaptonemal (10[1])complex forms to allow crossing-over during the division of these cells, one type of which arrests in prophase I. For 10 points, meiosis produces what type of cell that includes eggs and sperm? ■END■ (10[1])