Fate Maps
The details of the procedure of gastrulation are not simple to understand without the knowledge of positions of the cells of the future germinal layers in the blastula. A chart or diagram representing the prospective fate of each part of blastula or embryo at any stage of development is termed as a "fate map".
There are several ways of constructing the fate maps of blastulae or any other developmental stage of dissimilar animals.
- By Natural Markings
- Vital Dye Staining
- Carbon Particle Marking Method
- Radioactive Labeling