Anaphase
In anaphase, kinetochores pass over the microtubules causing the microtubules to shorten. The microtubules shorten, because the kinetochores disassemble parts of the microtubules they pass over. Motor proteins such as dynein and kinesin cause the kinetochores to move by acting on the microtubules. Then, the spindle poles move farther apart causing the sister chromatids to separate completely and each chromatid becomes an independent chromosome.
Telophase
Telophase begins when chromosomes arrive at each spindle pole. The chromosomes detach from microtubles and return to their original threadlike shape.
The vesicles of the broken nuclear envelope bind to form a membrane around the chromosomes which becomes a new nuclear envelope.
The chromosome number in the new nuclei is identical to the parent cell's chromosome number.
