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At the onset, stem cells called spermatogonia reside in the outer layer of the seminiferous tubules. These cells undergo differentiation and division, gradually moving inward toward the lumen of the tubule as they mature. This movement signifies an important developmental transition, which ultimately leads to the production of sperm cells.
Meiosis and the Formation of Spermatozoa
One of the critical phases in sperm cell development is meiosis, where the original spermatogonia divide to form spermatids. This step is essential for ensuring that the sperm cells carry the correct amount of DNA required for fertilization. Once formed, spermatids undergo further maturation, transforming into spermatozoa— the fully developed sperm cells.