
Concept explainers
To explain: Why it is expected that large numbers of species in a region will have had similar histories of geographic distribution.
Introduction: The way that animals have evolved and spread themselves geographically is a result of several processes such as genetic drift and natural selection. The pattern seen in the history of evolution of animals living in the same area is similar due to correlation between different taxa.
To explain: Using the image of phylogeographic analyses as illustrated in Fig.18.14, “Patterns of genetic divergence among populations” in the textbook, why it is expected that large number of species in a region would have had similar histories of geographic distribution.
Introduction: The way that animals have evolved and spread themselves geographically is a result of several processes such as genetic drift and natural selection. The pattern seen in the history of evolution of animals living in the same area is similar due to correlation between different taxa.

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