Fertilization is generally considered complete when the
A) zygote enters the uterus
B) sperm reaches the zona pellucida
C) ovulation is inhibited
D) placenta begins to form
E) haploid sperm units with the mature ovum
Correct Answer:
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Q1: While normally one secondary oocyte ruptures from
Q2: The zona pellucida and corona radiata are
Q5: What marks the end of the pre-embryonic
Q8: The blastocyst begins to form a second
Q9: To penetrate the zona pellucida of the
Q11: The process by which the blastocyst becomes
Q12: A zygote forms when
A) the nucleus from
Q18: Most sperm cells die in the vagina
Q19: The placenta forms from embryonic tissue and
A)
Q20: In humans, fertilization usually occurs _ after
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