Dos objeciones a la teoría del gen egoísta

Julián Bohórquez Carvajal; Reinaldo Bernal Velásquez

doi:10.5007/1808-1711.2023.e85023

Authors

Julián Bohórquez Carvajal Pontificia Universidad Javeriana
Reinaldo Bernal Velásquez Pontificia Universidad Javeriana

DOI:

https://doi.org/10.5007/1808-1711.2023.e85023

Keywords:

selfish gene theory, unit of selection, genetic replicators, Richard Dawkins, epigenetics

Abstract

We advance two objections to the selfish gene theory formulated by Richard Dawkins, which states that natural selection operates on genetic replicators. These objections target three of the essential features of the theory. The first feature is the exclusivity that the theory ascribes to genetic replicators as objects of natural selection. We call it “the exclusivity clause”. The second and third features correspond to two criteria that genetic replicators must satisfy for Dawkins’ theory to hold. We call them “the stability criterion” and “the fidelity criterion”. The first objection we advance is that, given the findings of transgenerational epigenetics, genetic replicators do not appear to satisfy the exclusivity clause and some of them do not seem to meet the stability criterion. The second objection is that the existence of the molecular phenomena known as alternative splicing and trans-splicing seems to entail that many genetic replicators do not satisfy neither the stability criterion nor the fidelity criterion.

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