In amphibian eggs,cells migrate to the interior of the embryo through the blastopore.In mammalian embryos,this migration occurs at the
A) archenteron.
B) primitive groove.
C) notochord.
D) blastopore.
E) gray crescent.

Question

Quizplus · Accepted Answer

In mammalian embryos, cell migration and gastrulation occur at the primitive groove, not at the blastopore as in amphibian embryos. The primitive groove is a depression on the surface of the embryo that marks the beginning of gastrulation.

In Amphibian Eggs,cells Migrate to the Interior of the Embryo