#Question id: 6966
#Unit 5. Developmental Biology
During gastrulation in the frog, the very first cells to move into the interior of the embryo through the blastopore come from the surface layer of cells in the marginal zone; they will become:
#Question id: 6967
#Unit 5. Developmental Biology
Gastrulation in sea urchins, Drosophila, and Xenopus all begin with a change in cell shape, in which the apical surface of an epithelial sheet contracts. This process is called:
#Question id: 6968
#Unit 5. Developmental Biology
In Xenopus, the mesoderm moves in through the blastopore by rolling around the dorsal lip in a process called:
#Question id: 6969
#Unit 5. Developmental Biology
In Xenopus, the elongation of the mesoderm toward the anterior results from the intercalation of cells during a process called:
#Question id: 6970
#Unit 5. Developmental Biology
Neural crest cells will become:
#Question id: 6971
#Unit 5. Developmental Biology
Neural crest cells taking the dorso-lateral route will become: