Convergence of ion channel genome content in early animal evolution
نویسندگان
چکیده
منابع مشابه
Convergence of ion channel genome content in early animal evolution.
Multicellularity has evolved multiple times, but animals are the only multicellular lineage with nervous systems. This fact implies that the origin of nervous systems was an unlikely event, yet recent comparisons among extant taxa suggest that animal nervous systems may have evolved multiple times independently. Here, we use ancestral gene content reconstruction to track the timing of gene fami...
متن کاملEARLY ANIMAL EVOLUTION Evolution: Oxygen and early animals
O nce upon a time – between 800 and 550 million years ago – the increasing levels of oxygen in the environment enabled animals to start evolving into the diverse life-forms that inhabit the Earth today (Lyons et al., 2014). Energetically speaking, life with oxygen is better than life without: a given amount of glucose processed in the presence of oxygen produces 18 times as much energy as the s...
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Embracing Uncertainty in Reconstructing Early Animal Evolution.
The origin of animals, one of the major transitions in evolution, remains mysterious. Many key aspects of animal evolution can be reconstructed by comparing living species within a robust phylogenetic framework. However, uncertainty remains regarding the evolutionary relationships between two ancient animal lineages - sponges and ctenophores - and the remaining animal phyla. Comparative morphol...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2015
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.1501195112