Cleavage: zygote undergoes multiple cell division with no significant growth → cytoplasm is partitioned to several cells
• Formation of a blastula
Gastrulation: establishment of embryonic germ layers
• Formation of a gastrula
• Blastopore is differentiated → becomes either the mouth or anus
A __________ is a hollow ball of cells of an early animal embryo.
e. inner cell mass
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Animal Development concept. You can view video lessons to learn Animal Development. Or if you need more Animal Development practice, you can also practice Animal Development practice problems.