Which structure do cells that make up the upper layer (the epiblast) and migrate toward the midline form?
A) Archenteron
B) Primitive streak
C) Chorion
D) Primitive groove
E) Notochord

Question

Quizplus · Accepted Answer

The primitive streak forms when cells from the upper layer (the epiblast) migrate toward the midline during early embryonic development. This structure is crucial for the establishment of the body plan, including the differentiation of cells into various tissue types.

Which Structure Do Cells That Make Up the Upper Layer