Interphase is the time when the cell is at rest. When it comes time for a cell to divide, the centrioles duplicate. During prophase, the centrioles move to opposite ends of the nucleus and a mitotic spindle of threads begins to appear. Those threads then connect to the now apparent chromosomes. During anaphase, the chromosomes are split and pulled towards each centriole. Once the entire cell begins to split in telophase, the chromosomes begin to unravel and new nuclear envelopes begin to appear.
The centrioles have done their job. Useful Reference Links. See the full list of biology topics at the site map! Current Page: Biology4Kids. They help determine the locations of the nucleus and other organelles within the cell. A centriole is a barrel-shaped organelle which lives normally within the centrosome.
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