| Sex is not a solution for reproduction: The libertine bubble theory |
| Auteur(s) : Lodé, T. Contributeurs : EthoS, UMR 6552; CNRS; Université de Rennes 1 Référence bibliographique : BioEssays, 2011, 33 (6), 419-422 DOI: 10.1002/bies.201000125 Type : Article scientifique Éditeur(s) : Wiley Periodicals, Inc. Date de publication : 01-08-2013 |
| Description : Conclusion
A negative interaction can easily act as an evolutionary dead-end as it affects
the survival of one individual. By contrast, in a self-reinforcing cycle, a positive exchange can be beneficial to all the individuals involved, which emphasises the structuring force of interactions, a well-known process in ecology. In a community of proto-cell bubbles, species differences do not exist because there are no barriers to
exchanges, hence rather than competition between bubbles, one might expect self-stabilising exchanges of genetic material that would – via primitive metabolism – increase in number at each exchange. The libertine bubble theory remains very parsimonious, as it only requires that genetic material be carried from one primitive bubble to another. Bubbles that possess membrane proteins or mechanisms for exchanging genes, i.e., libertine bubbles, will tend to interact with each other more frequently than other bubbles that are less prone to such interaction, providing the former with the potential to evolve. In this context, sex should not be regarded as a
solution for reproduction but as a primitive interaction. Mots-clés : Natural selection, hr,ryovd, sexual conflict |
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