The outer layer of the trophoblast that burrows into the lining of the uterus is the
A) embryoblast.
B) syncytiotrophoblast.
C) cytotrophoblast.
D) morula.
E) zona pellucida.
Correct Answer:
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Q2: After ovulation, the oocyte
A) waits passively for
Q3: The third through eighth weeks of development
Q4: The hormone that signals that fertilization and
Q5: The process by which a blastocyst embeds
Q6: Cleavage occurs during
A) the fetal period.
B) the
Q7: Implantation usually begins at about the end
Q8: Capacitation lasts several _ and involves removal
Q9: Sperm undergo a process of conditioning known
Q10: Cleavage involves a series of _ divisions
Q11: Which type of gamete remains viable for
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