Given a scientific passage and an answer, generate a question for the given answer.

Passage: Maturation of the ovum. Notice only 1 mature ovum, or egg, forms during meiosis from the primary oocyte. Three polar bodies may form during oogenesis. These polar bodies will not form mature gametes. Conversely, four haploid spermatids form during meiosis from the primary spermatocyte. Answer: the primary spermatocyte
Four haploid spermatids form during meiosis from what?