- Centrioles began to separate and reached the opposite poles.
2. Chromosomes vary.
3. Chromosomes are already duplicated as paired chromatids.
4. The chromatids are attached to a small region called the centromere.
5. Spindle fibers emerge between the daughter centrioles that form the achromatic spindle.
6. The nuclear membrane and the nucleolus disappear.
- Centromere attaches two split chromatids.
2. The two chromatids of each chromosome are separated and is attracted to the opposite poles by gravity.
3. The trench begins in the cell membrane in the middle of the animal cell.