Identical twins arise from a split at which stage?
A) the morula
B) the blastula
C) two cells
D) eight cells
E) 32 cells
Correct Answer:
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Q19: Which embryonic tissue is incorrectly associated with
Q20: Shortly after fertilization, successive cell divisions convert
Q21: The explanation for the differences between a
Q22: Which of the following is responsible for
Q23: At implantation the blastocyst breaks out of
Q25: In the process of cell differentiation,
A) some
Q26: The hollow space within the blastocyst is
Q27: Fraternal twins arise from
A) fertilization of two
Q28: The process by which body tissues and
Q29: Implantation of the embryo occurs in the
A)
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