When does the human blastocyst implant in the wall of the uterus?
A) only after all four extraembryonic membranes become established.
B) within a few hours of fertilization
C) about a day after conception
D) about a week after conception
Correct Answer:
Verified
Q25: Which of the following events occurs first
Q26: Which of the following statements regarding spermatogenesis
Q27: Which of the following occurs during cellular
Q28: Which of the following processes is most
Q29: The embryo implants in the of the
Q31: Fertilization in the female reproductive tract typically
Q32: After being produced in the testes,sperm mature
Q33: What occurs during gastrulation?
A)A hollow blastula is
Q34: Fission is an asexual process
A)that allows regeneration
Q35: Which of the following structures contributes to
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