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Cissiparity or Binary Fission

Cissiparity or Binary Fission


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Binary fission, in cell biology, is the name given to the asexual reproduction process of unicellular organisms which consists of dividing one cell into two by mitosis, each with the same genome as the "mother cell" (with the same DNA or genetic material as the "mother cell")

The process begins with DNA replication, where each new chain binds to the cell membrane, which then invaginates and eventually divides the cell in two, a process called cytokinesis.

Bacterial reproductive organisms include:

  • The bacteria;
  • Protozoa;
  • THE Pyrodictium abyssian anaerobic archaebacterium from the deep-sea hydrothermal springs (and other organisms in the same realm);
  • Yeast

Cissiparity is also referred to in the case of fairly simple multicellular organisms that are capable of regenerating divided parts (the classic example is the planarian).


Scheme showing cissiparity reproduction.