Multiple Choice
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
Correct Answer:
Verified
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