Centriole |
absent |
0 |
|
Basic organization of the spindle pole |
spindle pole body a plaque or disc |
3 |
|
Spindle pole body form, interphase-prophase |
a 2-layered disc |
2 |
|
Spindle pole body form, metaphase-anaphase |
a 2-layered disc with intact nuclear envelope and internal microtubule organizing center |
2 |
|
Metaphase nuclear envelope |
intact |
0 |
|
Telophase nuclear envelope |
retention of the nuclear envelope around the chromatin with constriction/fragmentation near the poles, and interzone is cut off from the daughter nuclei |
5 |
|
Perinuclear endoplasmic reticulum |
absent |
0 |
|
Spindle vesicles |
absent |
0 |
|
Central spindle |
absent |
0 |
|
Metaphase plate |
absent |
0 |
|
Spindle pole body cap |
absent |
0 |
|
Interphase chromatin condensation |
absent |
0 |
|
Nucleolus behavior |
nucleolus is persistent throughout division |
3 |
|
Transient intranuclear element at late interphase-prophase |
present within nucleus opposite the extranuclear spindle pole body |
1 |
|