An ectopic (tubal) pregnancy in a human occurs when the blastocyst
A) fails to hatch from the zona pellucida.
B) hatches too early from the zona pellucida.
C) hatches too late from the zona pellucida.
D) implants close to the cervix.
E) lacks a trophoblast.
Correct Answer:
Verified
Q30: Formation of the endoderm and mesoderm during
Q31: Refer to the figure showing stages of
Q32: Refer to the figure showing implantation in
Q33: The mesoderm
A) is located on the outside
Q34: Gastrulation is the stage of development
A) when
Q36: After gastrulation, the mesodermal cells contribute to
Q37: If a researcher inhibited formation of filopodia
Q38: Whereas _ contributes to the _, _
Q39: After gastrulation, the endodermal cells contribute to
Q40: After gastrulation, the ectodermal cells contribute to
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