The process of gastrulation ends with the formation of the
A) allantois.
B) placenta.
C) primary germ layers.
D) All apply.
Correct Answer:
Verified
Q21: The outer ring of cells of the
Q22: The embryo will develop from the _
Q23: An ectopic pregnancy that survives until term
Q24: The pre-embryonic structure that enters the uterus
Q25: The allantois
A)is the first site of blood
Q27: From which primary germ layer does the
Q28: Which is the last stage in pre-embryonic
Q29: Which of the following is NOT a
Q30: The yolk sac
A)is the first site of
Q31: Identical twins involve _ egg(s)and _ sperm.
A)two;two
B)one;one
C)two;one
D)one;two
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