Uniting sex and eukaryote origins in an emerging oxygenic world |
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Authors: | Jeferson Gross Debashish Bhattacharya |
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Institution: | (1) Department of Ecology, Evolution and Natural Resources, and Institute of Marine and Coastal Sciences, Rutgers, The State University of New Jersey, Foran Hall 102, 08901 New Brunswick, NJ, USA |
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Abstract: | Background Theories about eukaryote origins (eukaryogenesis) need to provide unified explanations for the emergence of diverse complex
features that define this lineage. Models that propose a prokaryote-to-eukaryote transition are gridlocked between the opposing
"phagocytosis first" and "mitochondria as seed" paradigms, neither of which fully explain the origins of eukaryote cell complexity.
Sex (outcrossing with meiosis) is an example of an elaborate trait not yet satisfactorily addressed in theories about eukaryogenesis.
The ancestral nature of meiosis and its dependence on eukaryote cell biology suggest that the emergence of sex and eukaryogenesis
were simultaneous and synergic and may be explained by a common selective pressure. |
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Keywords: | |
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