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 (10[1])channels that mediate (10[1])capacitation. (10[2]-5[1])A “calcium wave” (10[1])triggers the acrosomal (10[1]-5[2])reaction (10[2]-5[1])in one (-5[1])of these (10[1])cells, (10[4]-5[1])causing the release (10[1])of (10[1])hyaluronidase (10[1])at the zona pellucida (10[3])of another type of them. Asymmetric division of one type of these cells forms (10[1])polar bodies. (10[3])The (10[1])synaptonemal (10[2])complex forms to allow crossing-over during the division of these cells, one type of which arrests (10[1])in prophase I. (10[2])For 10 points, meiosis produces what type (10[1])of cell that includes eggs and sperm? (10[1])■END■ (10[2])