What Happens During Cleavage

question 21

Multiple Choice

What happens during cleavage?

• 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.

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