The mammalian blastocyst differs from a frog blastula in that the mammalian blastocyst
A) lacks a blastocoel.
B) is produced via cleavage.
C) forms after a solid ball of cells has formed.
D) produces both the embryo and support structures, such as the embryonic side of the placenta.
E) lacks blastomeres.

Question

Quizplus · Accepted Answer

The mammalian blastocyst is unique in that it gives rise to both the embryo and extraembryonic structures like the embryonic side of the placenta, distinguishing it from a frog blastula.

The Mammalian Blastocyst Differs from a Frog Blastula in That