The first four days of human embryonic development occur in the
A) uterus.
B) vagina.
C) cervix.
D) oviduct.
E) ovary.
Correct Answer:
Verified
Q8: The blastocyst begins to form a second
Q9: To penetrate the zona pellucida of the
Q10: Q11: The process by which the blastocyst becomes Q12: A zygote forms when Q14: When a sperm cell enters a secondary Q15: The blood vessels of the umbilical cord Q16: All of the following processes are associated Q17: During the development following fertilization, the morula Q18: Most sperm cells die in the vagina
A) the nucleus from
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