Multiple Choice
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.
Correct Answer:
Verified
Correct Answer:
Verified
Q132: Epiboly<br>A) is a form of convergent extension
Q133: Which are least likely to be cytoplasmic
Q134: Experimental overexpression of β-catenin in another region
Q135: Which feature characterizes the chick gastrula?<br>A) It
Q136: Which feature characterizes the trophoblast?<br>A) Trophoblast cells
Q138: Which feature characterizes complete cleavage?<br>A) It occurs
Q139: Which feature characterizes cleavage in most animals?<br>A)
Q140: A researcher who wants to block initiation
Q141: The _ is the primary embryonic organizer
Q142: Refer to the figure showing implantation in