Q:

Where do primordial germ cells initially develop?

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Where do primordial germ cells initially develop?


  1. In the gonads at week 4 of embryonic development
  2. In the yolk sac at week 4 of embryonic development
  3. In the gonads at month 5 of embryonic development
  4. In the yolk sac at month 5 of embryonic development
  5. In the gonads at puberty

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B. Primordial germ cells, the predecessors to gametes, are first seen in the wall of the yolk sac at week 4 of embryonic development, and they migrate into the gonads at week 6.

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