28. Human Development
Early Embryonic Development
Multiple Choice
Multiple ChoiceA hollow ball of cells created by cleavage is called a(n)?
A
Blastocyst.
B
Morula.
C
Trophoblast.
D
Embryoblast.
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A hollow ball of cells created by cleavage is called a(n)?
Blastocyst.
Morula.
Trophoblast.
Embryoblast.