#Question id: 5553
#Unit 5. Developmental Biology
The notochord is a ___ structure in vertebrate embryos that lies under the ___, and is bordered by ___.
#Question id: 5555
#Unit 5. Developmental Biology
The formation of the fertilization envelope requires an increase in the cytosolic concentration of ________.
#Question id: 5556
#Unit 5. Developmental Biology
Contact of a sea urchin egg with signal molecules on sperm causes the egg to undergo a brief ________.
#Question id: 5557
#Unit 5. Developmental Biology
The plasma membrane of the sea urchin egg ________.
#Question id: 5559
#Unit 5. Developmental Biology
During fertilization, the acrosomal contents ________.
#Question id: 5560
#Unit 5. Developmental Biology
In a newly fertilized egg, the vitelline layer ________.