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[11] [12] The Russian botanist Boris Kozo-Polyansky became the first to explain the theory in terms of Darwinian evolution. [13] In his 1924 book A New Principle of Biology. Essay on the Theory of Symbiogenesis, [14] he wrote, "The theory of symbiogenesis is a theory of selection relying on the phenomenon of symbiosis." [15]
An overview of the endosymbiosis theory of eukaryote origin (symbiogenesis). Symbiogenesis theory holds that eukaryotes evolved via absorbing prokaryotes. Typically, one organism envelopes a bacterium and the two evolve a mutualistic relationship. The absorbed bacteria (the endosymbiont) eventually lives exclusively within the host cells.
The symbiosis, subsequently also discovered in varying degrees in other protists such as Strigomonas culicis, Novymonas esmeraldas, Diplonema japonicum and Diplonema aggregatum are considered as good models for the understanding of the evolution of eukaryotes from prokaryotes, [3] [4] [5] and on the origin of cell organelles (i.e. symbiogenesis).
Evidence for this includes the fact that mitochondria and chloroplasts divide independently of the cell, and that these organelles have their own genome. [ 69 ] The biologist Lynn Margulis , famous for her work on endosymbiosis , contended that symbiosis is a major driving force behind evolution .
Several species of the Strigomonadinae, notably Strigomonas culicis and Angomonas deanei have been researched as "excellent models for the study of cell evolution because the host protozoan co-evolves with an intracellular bacterium in a mutualistic relationship", [2] and "the origin of new organelles" (i.e. symbiogenesis).
The urgent need for new models which take reticulate evolution into account has been stressed by many evolutionary biologists, such as Nathalie Gontier who has stated "reticulate evolution today is a vernacular concept for evolutionary change induced by mechanisms and processes of symbiosis, symbiogenesis, lateral gene transfer, hybridization ...
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She entered the Hyde Park Academy High School in 1952, [12] describing herself as a bad student who frequently had to stand in the corner. [8] A precocious child, she was accepted at the University of Chicago Laboratory Schools [13] at the age of fifteen. [14] [15] [16] In 1957, at age 19, she earned a BA from the University of Chicago in ...