Winning by losing in the human genome: or the hypothesis that less can be more in evolution

Authors

  • Juan Antonio García Ranea Spain

Keywords:

human genome, evolution

Abstract

The idea that the most complex organisms are the most evolved is deeply rooted in general scientific opinion. This is because we generally assume that organisms adapt better to the environment by increasing their functionalities, which entails, among other things, a parallel increase in their genetic complexity. The adaptive improvement achieved through the increase of genetic variants develops through an energetically expensive and innovatively slow cycle such as gene duplication, followed by divergence through the accumulation of mutations, and the selection or fixation of the new genetic variants in the population. It seems, therefore, contrary to common sense that a species “wants” to improve its adaptability by stoning its genetic inheritance, losing functional genes that it has cost so much to obtain throughout its evolution, as proposed in the hypothesis that “less is more”. It is for this reason that genetic research has focused more on functionally active genes than on “broken” genes or pseudogenes

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Published

2010-10-20

How to Cite

García Ranea, J. A. (2010). Winning by losing in the human genome: or the hypothesis that less can be more in evolution. Encuentros En La Biología, 3(130), 50–53. Retrieved from https://revistas.uma.es/index.php/enbio/article/view/18501