9. Which of the following correctly describes the sequence of developmental milestones in chordates?
(A) blastula → gastrula → cleavage
(B) cleavage → gastrula → blastula
(C) cleavage → blastula → gastrula
(D) gastrula → blastula → cleavage
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統計: 尚無統計資料
統計: 尚無統計資料