The _______ of mammals is an early embryonic developmental stage comparable to the blastula stage in other animals.

Question

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The blastocyst is the early embryonic developmental stage in mammals that is comparable to the blastula stage in other animals. The blastoderm is a layer of cells in avian embryos that gives rise to the embryo proper. A fetus is a later developmental stage after embryonic development. The trophectoderm is a layer of cells in the blastocyst that contributes to the development of the placenta. The inner cell mass is a group of cells located within the blastocyst that gives rise to the embryo proper.

The _______ of Mammals Is an Early Embryonic Developmental Stage