teleófase

Teleófase is the final stage of mitosis and meiosis, the processes of cell division. In mitosis, after the chromosomes have separated and moved to opposite poles of the cell, teleófase begins. During this phase, two new nuclear envelopes form around the two sets of chromosomes, effectively creating two new nuclei. The chromosomes also begin to decondense, returning to their less tightly packed state. Concurrently with teleófase, cytokinesis, the division of the cytoplasm, usually occurs, resulting in two distinct daughter cells.

In meiosis, teleófase occurs after both meiotic divisions. Following meiosis I, teleófase I involves the formation of two new nuclei, each containing half the number of chromosomes, but each chromosome still consists of two sister chromatids. Cytokinesis typically follows teleófase I, producing two haploid cells. Meiosis II then proceeds, and teleófase II occurs after the sister chromatids have separated. Similar to mitosis, two new nuclear envelopes form around the separated chromatids (now considered individual chromosomes) at each pole of the cell. Cytokinesis then completes the process, resulting in a total of four genetically distinct haploid daughter cells. The decondensation of chromosomes and the breakdown of the spindle fibers also characterize teleófase in both mitosis and meiosis.