development Flashcards
0
Q
cleavage
A
zygote-> blastula
1
Q
zygote
A
2n fertilized egg
2
Q
morula
A
Solid ball of cells
3
Q
blastula
A
hollow ball
4
Q
gastrulation
A
creates an arch of cells with 3 layers
top layer: ectoderm
middle: mesoderm
innermost: endoderm
5
Q
differentiation
A
genes turn off and cells do specific tasks