The Small Portion of the Embryo That Will Become Its

Question

The small portion of the embryo that will become its dorsal side develops from the
A) morula.
B) primitive streak.
C) archenteron.
D) gray crescent.
E) blastocoel.

Accepted Answer

The gray crescent is the area in amphibian embryos, such as frogs, that appears opposite the point of sperm entry. It marks the future dorsal side of the embryo and is crucial for the proper development of the embryo's body axis.