1 How many layers germ layers of cells are present in the

Last updated: 3/10/2023

1 How many layers germ layers of cells are present in the blastula 2 How many layers are present in early gastrulation 3 How many layers are present in late gastrulation 4 What structure forms the primitive gut 5 How would you structurally distinguish a fertilized egg from an unfertilized egg