Which of the following cells is the germ cell closest to the basal lamina in the seminiferous tubule?: (A) Primary spermatocyte, (B) Secondary spermatocyte, (C) Spermatid, (D) Spermatogonia
Answer is D. Maturation of germ cells (spermatogenesis) within the seminiferous tubules occurs in a concentric pattern, with the less mature spermatogonia near the basal lamina and the mature forms near the tubuleft center.