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Question

Why is meiosis called a reduction division?


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Solution

Meiosis :

  1. Meiosis is a kind of cell division wherein the chromosome number in the cells reduces resulting in haploid cells.
  2. Hence this cell division is known as a reduction division.
  3. It includes two cycle of cell division known as meiosis I and meiosis II.
  4. Before meiosis starts, the DNA replication occurs in the S-phase of the cell cycle.
  5. Prophase I marks the beginning of meiosis, which is followed by metaphase I, anaphase I, telophase I, and cytokinesis.
  6. Meiosis II occurs after this.
  7. Non-sister chromatid segments may swap positions during meiosis.
  8. One of the main characteristics of meiosis is the recombination of maternal and paternal genetic material.
  9. Primordial germ cells, which are distinct from the body's typical somatic cells and designed for sexual reproduction, go through meiosis.
  10. A germ cell passes through interphase, which involves replication of the whole cell (including the genetic material found in the nucleus), while it gets ready for meiosis.
What will be the chromosome number in humans during different phases of  mitosis and meiosis? - Quora | Cellule végétale, Cellules

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