Themes > Science > Zoological Sciences > About Zoology, Generalities > The Symbiotic Theory > Introduction


The Theory's Origin

The Endosymbiotic Theory of Eukaryote Evolution (Symboitic Theory) was first proposed by former Boston University Biologist Lynn Margulis in her 1981 book "Symbiosis in Cell Evolution".  For years the theory was rejected by mainstream biologists who also considered Margulis to be an embarrasement to the field of biology.  However, as both time and Margulis persisted, the theory is now mainstream science and is considered to explain the single most important event of the organic world.

What Is The Symbiotic Theory?

The Symbotic Theory provides an explanation for the evolution of multicelled organisms known as Eukaryotes from its ancestral forms of Prokaryotes.  The theory states that these organisms evolved not by random genetic mutation as previously believed, but by a number of cell combinations.  The simpler, less complex Prokaryotic derivitives combined or merged together into a single host cell to the extent of being an inseperable structure and formed today's multicellular Prokaryotes.  The evolution of Prokaryotes is the key to the existence and evolution of every multicellular organism in the world today, and with the mounting evidence supporting the Symbiotic Theory, it appears that humans may now have a plausible explanation for one of the most fundamental links in the evolutionary timeline.Speaking of the evolutionary timeline, let us examine some important dates to remember:


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