The allantois
A) becomes the umbilical blood vessels in humans.
B) is a structure composed of two germ layers.
C) provides nourishment to the chick embryo.
D) is involved in gas exchange in the chick embryo.
E) becomes the chorionic villi in humans.
Correct Answer:
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Q21: In human development, what is the site
Q22: A pregnancy test is sensitive to which
Q23: Which part of the blastocyst will develop
Q24: Implantation occurs during the
A) fertilization.
B) first week.
C)
Q25: Which of the following structures is responsible
Q27: Which of the following serves as an
Q28: Which of the following structures provides nourishment
Q29: The presence of the same homeotic genes
Q30: In fetal circulation, which structure allows blood
Q31: Genes that determine how segments develop during
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