Which of the Following Correctly Describes the Sequence of Developmental

Question

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

Accepted Answer

The correct sequence of developmental milestones in chordates starts with cleavage (cell division without growth), followed by the formation of the blastula (a hollow ball of cells), and finally the gastrula (formation of distinct layers).