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  1. Archaea‐First and the Co‐Evolutionary Diversification of Domains of Life.James T. Staley & Gustavo Caetano-Anollés - 2018 - Bioessays 40 (8):1800036.
    The origins and evolution of the Archaea, Bacteria, and Eukarya remain controversial. Phylogenomic‐wide studies of molecular features that are evolutionarily conserved, such as protein structural domains, suggest Archaea is the first domain of life to diversify from a stem line of descent. This line embodies the last universal common ancestor of cellular life. Here, we propose that ancestors of Euryarchaeota co‐evolved with those of Bacteria prior to the diversification of Eukarya. This co‐evolutionary scenario is supported by comparative genomic and phylogenomic (...)
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  • Long-term evolution of viruses: A Janus-faced balance.Arshan Nasir, Kyung Mo Kim & Gustavo Caetano-Anollés - 2017 - Bioessays 39 (8):1700026.
    The popular textbook image of viruses as noxious and selfish genetic parasites greatly underestimates the beneficial contributions of viruses to the biosphere. Given the crucial dependency of viruses to reproduce in an intracellular environment, viruses that engage in excessive killing (lysis) can drive their cellular hosts to extinction and will not survive. The lytic mode of virus propagation must, therefore, be tempered and balanced by non‐lytic modes of virus latency and symbiosis. Here, we review recent bioinformatics and metagenomic studies to (...)
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