| Initial stage | Blastula | Early gastrula | Mid gastrula | Late gastrula | Early planula | Planula |
---|---|---|---|---|---|---|---|
Final stage | Â | Â | Â | Â | Â | Â | Â |
 Early gastrula |  | (0:0:0) |  |  |  |  |  |
 Mid gastrula |  | (0:0:0) | (2:1:0) |  |  |  |  |
 Late gastrula |  | (0:0:0) | (2:0:0) | (1:0:0) |  |  |  |
 Early planula |  | (0:0:0) | (0:0:0) | (1:0:0) | (3:0:0) |  |  |
 Planula |  | (0:0:0) | (0:1:0) | (1:0:0) | (1:0:0) | (2:0:0) |  |
 Late planula |  | (0:0:0) | (0:0:0) | (0:0:0) | (0:0:0) | (1:0:0) | (1:1:0) |