Unknown The primordial germ cells that eventually from , the oogonia and spermatogonia originate in which of the following A Dorsal mesentery of the hindgut B Gonadal ridge C Endodermal lining of the yolk sac D Primary sex cords of the developing gonad 💡 Explanation The primordial germ cells that eventually from , the oogonia and spermatogonia originate in which of the following ✓ Correct Answer: C. Endodermal lining of the yolk sac