The _____ develops into the fetal portion of the placenta.
A) amnion
B) archenteron
C) chorion
D) yolk sac
E) allantois
Correct Answer:
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Q26: A pregnancy test is based on the
Q27: Genes that determine how segments develop during
Q28: The allantoic blood vessels
A)are analogous to the
Q30: _ is the parceling out of maternal
Q31: The _ is responsible for gas exchange
Q32: The _ provides nourishment for the embryo
Q33: A homeotic gene codes for a(n) _
Q34: In human development,the _ is the site
Q35: The sac that surrounds the fetus and
Q36: In experiments with the roundworm Caenorhabditis elegans,
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