Asked in UHS MDCAT 2011 2011Moderate

When chromosomes uncoil, the nucleoli are reformed and two nuclei are the two poles of the cell; stage is known as:

Correct answer: C. Telophase

  • A. Prophase
  • B. Metaphase
  • C. Telophase
  • D. Anaphase

Explanation

Telophase is the fifth and final phase of mitosis, the process that separates the duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells. Telophase begins once the replicated, paired chromosomes have been separated and pulled to opposite sides, or poles, of the cell.The nucleolus reappears during telophase as part of the reversal of prophase events; it reforms from the remnants of the previous nucleolus and other membrane vesicles that are reassembling into a new nuclear envelope around the separated daughter chromosomes. This process re-forms two new nuclei, each with its own decondensed chromosomes, nuclear membrane, and nucleolus, preparing the cell for interphase.

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About Chromosomes

Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.

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