Simultaneously, the poles of the cell move farther apart, elongating the cell. At the end of anaphase, the two poles have identical collections of chromosomes.
Daughter nuclei begin to form at the two poles.
Nuclear envelopes form around the chromosomes from fragments of the parent cell's nuclear envelope and portions of the endomembrane system. Chromatin fiber of each chromosome uncoils and the chromosomes become less distinct. Cytokinesis has begun and the appearance of two separate daughter cells occurs shortly after mitosis is completed. During prophase, the mitotic spindle forms in the cytoplasm from microtubules and associated proteins. Microtubules of the cytoskeleton are partially disassembled during spindle formation.