Centriole |
absent |
0 |
|
Basic organization of the spindle pole |
spindle pole body a plaque or disc |
3 |
 |
Spindle pole body form, metaphase-anaphase |
unlayered disc with intact nuclear envelope and internal microtubule organizing center |
1 |
 |
Spindle development site |
intranuclear (nuclear envelope intact) |
2 |
 |
Metaphase nuclear envelope |
intact |
0 |
 |
Telophase nuclear envelope |
retention of complete nuclear envelope around the chromatin with median constriction/fragmentation |
0 |
 |
Perinuclear endoplasmic reticulum |
absent |
0 |
|
Spindle pole body cap |
absent |
0 |
 |
Nucleolus behavior |
nucleolus is persistent throughout division |
3 |
 |