Fraternal twins arise from
A) fertilization of two eggs by two sperm.
B) fertilization of two eggs by one sperm.
C) a split of the morula.
D) a split of the blastomere.
E) cleavage of the zygote.
Correct Answer:
Verified
Q22: Which of the following is responsible for
Q23: At implantation the blastocyst breaks out of
Q24: Identical twins arise from a split at
Q25: In the process of cell differentiation,
A) some
Q26: The hollow space within the blastocyst is
Q28: The process by which body tissues and
Q29: Implantation of the embryo occurs in the
A)
Q30: The first several cleavages after fertilization occur
Q31: Fertilization leading to a viable pregnancy in
Q32: In an ectopic pregnancy, implantation occurs
A) in
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