Anatomy Where do primordial germ cells initially develop A In the gonads at week 4 of embryonic development B In the yolk sac at week 4 of embryonic development C In the gonads at month 5 of embryonic development D In the yolk sac at month 5 of embryonic development 💡 Explanation Where do primordial germ cells initially develop ✓ Correct Answer: B. In the yolk sac at week 4 of embryonic development