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Characterization of a Branch of the Phylogenetic Tree

✍ Scribed by STUART A. SAMUEL; GEZHI WENG

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
287 KB
Volume
220
Category
Article
ISSN
0022-5193

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✦ Synopsis

We use a combination of analytic models and computer simulations to gain insight into the dynamics of evolution. Our results suggest that certain interesting phenomena should eventually emerge from the fossil record. For example, there should be a "tortoise and hare effect": those genera with the smallest species death rate are likely to survive much longer than genera with large species birth and death rates. A complete characterization of the behavior of a branch of the phylogenetic tree corresponding to a genus and accurate mathematical representations of the various stages are obtained. We apply our results to address certain controversial issues that have arisen in paleontology such as the importance of punctuated equilibrium and whether unique Cambrian phyla have survived to the present.

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