生命之树分支中的普遍缩放
Universal scaling in the branching of the Tree of Life
摘要：
了解地球上生命多样化的模式和过程是科学的一个关键挑战。生命之树通过不同类群之间的进化关系代表了这种多样化过程，并可以扩展到种内关系。在这里，我们研究的拓扑性质的一个大的种间和种内同源性，并表明，分支模式遵循异速生长的规则保存在不同的层次上的生命之树，所有显着偏离预期的标准零模型。系统发育分化的非随机普遍模式的发现表明，类似的进化力量推动了从宏观进化到微观进化过程的广泛规模的多样化，塑造了地球上生命的多样性。
英文摘要：
Understanding the patterns and processes of diversification of life in the planet is a key challenge of science. The Tree of Life represents such diversification processes through the evolutionary relationships among the different taxa, and can be extended down to intra-specific relationships. Here we examine the topological properties of a large set of interspecific and intraspecific phylogenies and show that the branching patterns follow allometric rules conserved across the different levels in the Tree of Life, all significantly departing from those expected from the standard null models. The finding of non-random universal patterns of phylogenetic differentiation suggests that similar evolutionary forces drive diversification across the broad range of scales, from macro-evolutionary to micro-evolutionary processes, shaping the diversity of life on the planet.
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