Many things happen during gastrulation, one of which is: 1. The different kinds
ID: 22804 • Letter: M
Question
Many things happen during gastrulation, one of which is:1. The different kinds of tissue type cells were all mixed up in the blastula but become separated from each other during gastrulation.
2. Cells not initially in contact with each other move next to each other and particular proteins on their plasma membranes bind to each other sending signals to their nuclei.
3. Undifferentiated cells become muscle.
4. The nervous system forms so as to be able to regulate the later formation of organs.
5. The polarity of the embryo (up, down, left, right, front, back) is determined.
Explanation / Answer
2. Cells not initially in contact with each other move next to each other and particular proteins on their plasma membranes bind to each other sending signals to their nuclei.