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Meiosis Video for Kids

 

                                                 All about Meiosis

Meiosis can be defined as a process in which a single cell divides twice and produces four cells. These daughter cells contain half the original amount of genetic information. The parent cells are diploid in this process. Such resultant cells are known as haploid daughter cells. All the daughter cells differ somewhat from each other. The entire process can be divided into nine different stages. These stages are Interphase, Prophase I, Metaphase I, Anaphase I, Telophase I, Prophase II, Metaphase II, Anaphase II and Telophase II. It involves two successive cell divisions.

Quick Facts: –

  • Most living organisms require Meiosis for reproduction. The resultant cells allow them to have offspring.
  • During this process, the chromosomes can exchange parts and each daughter cell has 23 chromosomes.
  • The basic number of chromosomes in the body cells of a species is called the somatic numberand is labelled 2n.
  • The process of meiosis keeps the number of chromosomes from doubling each generation.
  • Although the process is somewhat similar to Mitosis but there are a few differences that affect resultant products.
  • Once both the homologous chromosomes in a pair join up to form a structure known as tetrad, a process called crossing-over takes place.
  • In the first round of Metaphase, pairs of chromosomes line up along the equator.
  • All eukaryotes use meiosis for their reproduction. This also includes many single-celled organisms.
  • This process does not take place in archaea or bacteria as they reproduce by binary fission.
 

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