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Eukaryotic Origins
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The Evolution of Plastids

Primary and secondary endosymbiosis

Primary and secondary endosymbiosis

The hypothesized process of endosymbiotic events leading to the evolution of chlorarachniophytes is shown. In a primary endosymbiotic event, a heterotrophic eukaryote consumed a cyanobacterium. In a secondary endosymbiotic event, the cell resulting from primary endosymbiosis was consumed by a second cell. The resulting organelle became a plastid in modern chlorarachniophytes.

Source

    Boundless vets and curates high-quality, openly licensed content from around the Internet. This particular resource used the following sources:

    "OpenStax College, Eukaryotic Origins. October 16, 2013."
    http://cnx.org/content/m44614/latest/Figure_23_01_05.jpg OpenStax CNX CC BY 3.0.

Related Terms

  • chloroplast
  • thylakoid
  • plastid
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