Which of the following statements about the mammalian blastocyst is false?
A) The trophoblast gives rise to the embryo proper.
B) Maternal genes are expressed during cleavage.
C) The blastocyst implants itself in the mother's uterus.
D) Early mammalian cleavage is relatively slow.
E) The trophoblast contributes to formation of the chorion.

Question

Quizplus · Accepted Answer

The trophoblast gives rise to the placenta, not the embryo proper. The embryo proper is derived from the inner cell mass (ICM) within the blastocyst.

Which of the Following Statements About the Mammalian Blastocyst Is