The portion of the blastocyst from which the baby develops is called the
A) embryonic disk.
B) trophoblast.
C) placenta.
D) ectoderm.
Correct Answer:
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Q5: Which of the following cell groups becomes
Q6: In which stage of prenatal development does
Q7: The fertilized ovum divides and implants in
Q8: The correct order for the three prenatal
Q9: An 8-month-old fetus is _ inches long
Q11: The zygote begins rapid cell division and
Q12: At the end of the first month
Q13: The _ principle explains why an embryo's
Q14: Dr.McGuire is studying the cells in the
Q15: The fluid-filled sphere that floats freely in
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