tags: evolution, beak and body size, Geospiza fortis, inbreeding, mating patterns, reproductive isolation, sexual imprinting
A family tree depicts the evolution of the 14 species of "Darwin's finches".
(The focus of this study, the Medium Ground Finch, Geospiza fortis, is denoted with a red dot).
[larger image].
I have always been fascinated by the process of speciation throughout my scientific career because speciation is the "engine" that generates biological diversity. But what are the evolutionary mechanisms that lead to speciation? We know that mate choice can be one important…
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