Secondary constriction I reorganize the nucleolus during telophase. During telophase, the effects of prophase and prometaphase are reversed. Two daughter nuclei form the nuclear lamina at the ends of the cell, forming nuclear envelopes around each nucleus. As the nuclear membranes reform around each set of chromatids, the nucleoli also reappear. The chromosomes also unwind back into the expanded chromatin that is present during interphase.