Which Statement About Cleavage and Early Development in Placental Mammals

question 191

Multiple Choice

Which statement about cleavage and early development in placental mammals is true?

• A) Cells of the inner cell mass initiate implantation.
• B) Premature hatching of the blastocyst from the zona pellucida can result in ectopic pregnancy.
• C) Mammalian cleavage produces a blastocyst, which produces the body of the embryo, while the maternal tissues produce all the tissues of the placenta.
• D) Cells of the trophoblast are pluripotent stem cells.
• E) Cells derived from the trophoblast form the amnion and yolk sac.

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Definitions:

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