Biology 2nd Edition by Robert Brooker, Eric Widmaier ,Linda Graham ,Peter Stiling

تمرين 4

Using the following list, describe the proper sequence for the events of animal development:
1) Tissues, organs, and other body structures in each segment are formed.
2) Axes of the entire animal are determined.
3) Cells become differentiated.
4) The entire animal is divided into segments.
A) 2, 3, 4, 1
B) 1, 2, 4, 3
C) 2, 4, 3, 1
D) 3, 2, 4, 1
E) 2, 4, 1, 3