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[Perspective] Watching speciation in action

Charles Darwin closed his first edition of On the Origin of Species with the poetic words: “There is grandeur in this view of life,…whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being, evolved” (1). Today, scientists are using genetics to understand how species multiply, and ecological and behavioral knowledge to understand why they do so. However, many questions remain about the sources of genetic variation and how new…

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