Review ArticleEvolving Ecosystems: Inheritance and Selection in the Light of the Microbiome
Section snippets
The Object of Selection
Natural selection has been a controversial subject since Darwinian times. With the discovery of genes and the formulation of the modern synthesis some scientists thought that selection should act upon genes, since they were the subject of mutation and thus were the raw material of evolution (1). However, evolutionary biologists such as Ernst Mayr and Sewall Wright argued that selective pressures do not only act on single genes. Based on the observation that many genes' functionalities depend on
Conclusions and Perspectives
In this review we have covered a wide range of topics related to the evolution of holobionts. We have shown that the holobiont concept, in addition to being consistent with experimental observations, also provides a new perspective to reformulate fundamental evolutionary questions. Since hosts and microorganisms have coevolved through millions of years, it is reasonable to expect the latter to be well suited to hold information about past and present environmental conditions (together with
Acknowledgments
The authors thank Prof. Michele Gold Morgan and Prof. Teresa Bosques for their critical reading of the manuscript and their many valuable suggestions. AF thanks El Colegio Nacional for its generous support. SSM thanks Catedras CONACYT 2017 program for its support.
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