The shape of evolution: a comparison of real and random clades

摘要: The history of life is replete with apparent order. Much this order may reflect the deterministic causes conventionally invoked, but we cannot be sure until measure and subtract that arises in simple random systems. Consequently, have constructed a model builds evolutionary trees by allowing lineages to branch become extinct at equal probabilities. We proceed dividing our simulated tree into clades comparing their sizes shapes patterns exhibited “real” as recorded fossils.We regard similarity real outstanding result comparison. In both systems, arising after an “ecological barrel” had been filled maximum diversity midpoint duration; during initial “filling” reach earlier climax preequilibrial period rapid diversification. However, some potential differences also emerge. Clades still living are much larger than clades. attribute morphological superiority survivors, can simulate it chooses originators random. Real undergo greater fluctuations do clades, effect not marked.