Multiple Choice
What happens during gastrulation?
A) The neural tube-precursor of the spinal cord and brain-forms.
B) Basal and apical cells-precursors of the suspensor and embryo,respectively-form.
C) The fertilized egg divides without growth occurring,forming a ball of cells.
D) Massive movements of cells make the primary body axes visible and organize the three embryonic tissues.
Correct Answer:

Verified
Correct Answer:
Verified
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