Which of the following statements best defines spermatogenesis?

Spermatogenesis refers specifically to the process through which male gametes, or sperm cells, are produced from spermatogonia, which are the precursor cells located in the testes. This process involves several stages, including mitotic divisions of spermatogonia, meiosis to form haploid spermatids, and subsequent differentiation into mature sperm.

In this context, the correct answer accurately describes the entire sequence of events that lead to the formation of sperm. The transformation of spermatogonia into sperm involves both genetic reduction and cellular transformation, which are critical for the production of functional gametes capable of fertilization. While the other options mention various related concepts, none correctly encompass the entire role and definition of spermatogenesis, focusing instead on different aspects of reproduction or cell growth.